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Chaos Computer Club

The Chaos Computer Club e. V. (CCC) is Europe's largest association of hackers, founded in 1981 as a non-profit organization dedicated to analyzing and publicizing the technical and societal effects of computer technology while advocating for informational self-determination and resistance to undue surveillance.^[1]^[2] With approximately 5,500 members, the CCC organizes the annual Chaos Communication Congress—a major international hacker conference held since 1984 that attracts thousands for lectures, workshops, and demonstrations on digital security and civil liberties—and publishes the long-running magazine Die Datenschleuder to share investigative findings on technology's implications.^[2]^[3] The group has distinguished itself through hands-on security audits, including early unauthorized penetrations of systems like the German postal service's network in 1984 to prove ignored warnings about flaws, and later analyses of state malware such as the Bundes-Trojaner, which exposed backdoors enabling mass surveillance; these actions, though sparking legal and public debates, have empirically driven improvements in security practices and heightened scrutiny of government overreach in digital privacy.^[4]^[5]

Founding and Organization

Establishment in 1981

The Chaos Computer Club (CCC) was founded on 12 September 1981 in West Berlin by a group of computer enthusiasts led by Wau Holland (real name Frank-Michael Holland) and including Steffen Wernéry.^[6]^[7]^[8] The inaugural meeting took place in the offices of the newspaper Die Tageszeitung, at a table salvaged from the former Kommune 1 commune, reflecting the group's countercultural roots and interest in alternative social structures.^[9] This gathering marked the formal establishment of Europe's oldest and largest hacker association, initially comprising a small number of members focused on exploring emerging digital technologies.^[2]^[10] From its inception, the CCC positioned itself as a civil society organization dedicated to examining the societal implications of computerization, particularly emphasizing information freedom, data privacy, and technological transparency in the German-speaking world.^[2]^[11] The founders, drawing from backgrounds in computer science, journalism, and activism, sought to counter potential abuses of power in electronic communication systems amid the early personal computing era and the rise of state-controlled networks like Bildschirmtext (BTX).^[4]^[12] Wau Holland, a key visionary, coined the name "Chaos Computer Club" to evoke the unpredictable yet innovative nature of hacking as a tool for societal critique rather than criminality.^[12] The group's early structure was informal, evolving into regional "Erfakreisen" (expert circles) and local meetups known as "Chaostreffs," which facilitated hands-on experimentation and knowledge sharing among members.^[2] This decentralized model underscored the CCC's commitment to grassroots technical research, distinguishing it from commercial or governmental entities. By prioritizing ethical disclosure of security vulnerabilities—often through public demonstrations—the organization aimed to educate the public and policymakers on digital risks, laying the groundwork for its role as a watchdog on technology policy.^[10]^[13]

Membership and Internal Structure

The Chaos Computer Club (CCC) is structured as an eingetragener Verein (registered association) under German civil law, governed by its statutes (Satzung) originally adopted on February 16, 1986, and last amended by general assembly decision on May 21, 2023.^[14] Membership is restricted to natural persons, who qualify as ordinary members upon board approval of their application and payment of the initial annual contribution; the board retains discretion to reject or terminate acceptance within the first membership year without stated cause.^[14] The standard annual fee stands at 72 euros, with a reduced rate of 36 euros available to students, pupils, the unemployed, pensioners, and individuals with disabilities upon submission of verifying documentation; fees are prorated from the joining date and remain due for the current year even upon resignation or exclusion.^[15] Applications require completion of an official form submitted by mail or email to the membership administration, which issues a unique "Chaos number" for identification and handles subscriptions to the club's magazine, Die Datenschleuder.^[15] Supporting members contribute dues without voting or electoral rights, while honorary members—nominated for exceptional contributions—are exempt from fees but may participate without formal powers.^[14] Exclusion from membership occurs at board discretion for conduct damaging the club's reputation, persistent non-payment after reminders (typically after one year), or other grave violations, with affected parties able to appeal to the general assembly within four weeks, suspending their status pending resolution.^[14] The club enforces a declaration of incompatibility, updated unanimously at the April 2025 general meeting in Frankfurt, barring membership alignment with ideologies or organizations contradicting its core principles of information freedom and societal technology assessment, such as right-extremist groups.^[16] Governance centers on the general assembly (Mitgliederversammlung), the supreme decision-making body, which convenes biennially or extraordinarily upon board or member petition (with five percent quorum threshold); it elects the board and auditors, amends statutes by three-quarters majority, and decides by simple majority otherwise, with one vote per ordinary member and no proxies permitted.^[14] The board (Vorstand), elected for two-year renewable terms, comprises five voluntary positions—a chairperson, two deputy chairpersons, a treasurer, and an Erfa representative—responsible for daily administration, finances, staff oversight, and advisory council formation, with expense reimbursement but no salaries.^[14]^[17] Following the April 6, 2025, general assembly election, the board includes Stefan Böhm as chairperson, Kathrin Grannemann and Tobias Kunze as deputies, Birte Friesel as treasurer, and Mika Andre as Erfa representative.^[17] The CCC's internal organization emphasizes decentralization, with over two dozen regional subgroups (Erfa-Kreise or experience-exchange circles) operating semi-autonomously in German cities and affiliated hackerspaces, coordinating local events, workshops, and advocacy while linking to national initiatives through the board's Erfa representative and annual Chaos Communication Congress assemblies.^[18] This flat structure aligns with the club's statutes preamble, framing it as a "galactic community of living beings" unbound by age, origin, or status, prioritizing collaborative security research over rigid hierarchy.^[14]

Principles and Ethical Framework

Commitment to Information Freedom and Privacy

The Chaos Computer Club (CCC) upholds hacker ethics that emphasize unrestricted access to information as a foundational principle, articulated as "All information should be free" and the imperative to "make public data available" while "protect[ing] private data."^[19] These rules, adapted from Steven Levy's 1984 documentation of early hacker culture and expanded by the CCC in the 1980s, promote total access to computers and systems that reveal operational realities, coupled with a hands-on approach to learning and a mistrust of centralized authority in favor of decentralization.^[19] This framework positions the CCC as advocates for transparency in public data dissemination, viewing information hoarding by institutions as antithetical to societal progress, while insisting on robust safeguards for individual privacy to prevent misuse or surveillance.^[19] In practice, the CCC's mission includes disseminating knowledge on surveillance technologies and privacy risks to empower public awareness and resistance against erosions of digital rights.^[1] The organization routinely critiques governmental overreach, such as mass surveillance initiatives, arguing that resources spent on network infiltration should instead fund secure infrastructure and technical education.^[20] For instance, in January 2015, the CCC demanded universal encryption for online communications, rejecting European proposals for backdoors that would compromise data integrity, and called for penalties on unencrypted handling of sensitive information.^[20] The CCC has actively opposed legislation perceived to undermine information freedom, including the 2017 Network Enforcement Law (NetzDG), which it condemned as enabling privatized censorship by pressuring platforms to preemptively remove content under threat of fines, thereby stifling minority viewpoints and bypassing judicial oversight.^[21] More recently, in October 2025, the group urged rejection of EU "chat control" proposals, aligning with its broader stance against biometric monitoring and surveillance expansions that violate data protection norms.^[22] Through such interventions, including legal challenges and public campaigns, the CCC reinforces its dedication to human rights in communication, prioritizing empirical demonstrations of vulnerabilities to advocate for resilient, privacy-preserving systems over authoritarian controls.^[1]

Approach to Hacking and Security Research

The Chaos Computer Club (CCC) defines its approach to hacking and security research through a codified hacker ethics that prioritizes hands-on access to computers and knowledge, the free flow of information, and a profound mistrust of centralized authority in favor of decentralization.^[19] Originating from principles outlined in Steven Levy's 1984 book Hackers: Heroes of the Computer Revolution and adapted by the CCC in the 1980s, these ethics explicitly call for judging hackers by their actions rather than extraneous factors like degrees, age, race, or position, while mandating the availability of public data alongside strict protection of private data.^[19] This framework positions hacking not as destructive mischief but as a methodical, exploratory practice aimed at uncovering systemic flaws to foster technological improvement and societal benefit. At the core of CCC's security research methodology is responsible, reflective hacking guided by the mantra "use public data, protect private data," which demands ethical conduct beyond technical skill and insists on critical self-examination to avoid misuse of technology for domination or harm.^[23] The group employs practical experimentation—reverse engineering systems, probing vulnerabilities, and simulating attacks—to demonstrate weaknesses in areas like surveillance tools, authentication protocols, and digital infrastructures, often culminating in public disclosures to highlight risks and urge remediation.^[24] This process integrates knowledge-sharing events, such as workshops and congresses, where findings are presented transparently to educate developers, policymakers, and the public, emphasizing curiosity, openness, and mutual respect within a community unbound by formal hierarchies.^[25] The CCC views security research as intertwined with broader technology assessment, challenging instrumental uses of tech that enable control while promoting its potential to enhance life through creative applications, such as generating art and beauty in code.^[19] By rejecting data pollution—"don't litter others' data"—and advocating against authority-driven centralization, their work underscores causal links between unexamined systems and privacy erosions, prioritizing empirical demonstrations over theoretical advocacy to drive real-world reforms.^[19] This ethic explicitly bars behaviors like racism or fascism, deeming them incompatible with hacking's constructive ethos, as affirmed in club declarations.^[23]

Key Technical Demonstrations

BTX System Breach (1980s)

In November 1984, members of the Chaos Computer Club (CCC), including Herwart Holland (known as Wau Holland) and Steffen Wernéry, exploited vulnerabilities in the Bildschirmtext (BTX) system operated by the Hamburger Sparkasse, a Hamburg-based savings bank.^[26]^[27] BTX was West Germany's national videotex network, launched in the late 1970s as a government-backed initiative to provide online information services, including banking transactions, via telephone lines connected to television sets or terminals, with charges billed per session.^[28] The system's security relied on a four-digit PIN derived from the last four digits of the user's account number, which the CCC identified as easily guessable due to its predictability and lack of additional authentication layers.^[26] On the night of November 16–17, 1984, the hackers accessed a BTX account without authorization, transferring 135,000 Deutsche Marks (DM) to a second account under their control, then reversing the transaction to return the funds, all while demonstrating that the operations initially left no traceable logs.^[27]^[28] Prior to the demonstration, the CCC had warned the bank and Deutsche Bundespost (the state postal service overseeing BTX) about these flaws, but received no substantive response, prompting the group to publicize the breach on November 19, 1984, through media outlets including Der Spiegel and a press conference.^[27] The action underscored fundamental weaknesses in early electronic transaction systems, such as inadequate encryption and reliance on static identifiers, which could enable unauthorized access via brute-force or social engineering methods.^[26] The BTX hack drew widespread attention to the risks of digital financial services at a time when BTX was promoted as a secure platform for e-commerce and home banking, influencing public and policy debates on data security in West Germany.^[28] No funds were permanently misappropriated, aligning with the CCC's stated intent to expose systemic risks rather than commit theft, though the incident led to legal scrutiny of the hackers under West German computer crime laws, which were then nascent.^[27] It catalyzed improvements in BTX protocols, including stronger PIN requirements and logging mechanisms, and elevated the CCC's profile as advocates for robust information security through adversarial testing.^[26]^[28]

GSM Network Vulnerabilities (1990s)

In April 1998, members of the Chaos Computer Club (CCC) publicly demonstrated the cloning of a Global System for Mobile Communications (GSM) subscriber identity module (SIM) card, exposing critical weaknesses in the system's authentication mechanism. By exploiting flaws in the COMP128-1 algorithm—a proprietary implementation of the GSM A3 authentication and A8 session key generation functions—the group extracted the 128-bit subscriber authentication key (Ki) from a target SIM. This process involved issuing approximately 150,000 challenge-response queries to the SIM card via a modified mobile phone interface, leveraging the algorithm's predictable output patterns in the signed response (SRES) and ciphering key (Kc) to reconstruct Ki through cryptanalytic analysis.^[29] The cloned SIM enabled full impersonation of the original, allowing unauthorized access to the GSM network for voice calls, data services, and location tracking, with all charges billed to the legitimate subscriber. CCC researchers, including key figures like Tron (Boris Floricic), reverse-engineered COMP128-1's internal structure, revealing that it insufficiently protected Ki due to deliberate weaknesses introduced for compatibility and export reasons, such as truncated outputs and reliance on a reduced effective key space. This vulnerability stemmed from GSM's design compromise between security and interoperability, where operators adopted a single, non-open algorithm from Siemens without rigorous independent scrutiny, rendering billions of early 2G SIM cards susceptible to physical attacks requiring only brief access to the card.^[29] The demonstration, conducted without network operator cooperation, underscored broader GSM insecurities, including the absence of mutual authentication—SIMs verified the network, but networks did not robustly verify SIMs—facilitating fraudulent cloning and eavesdropping risks when combined with weak stream ciphers like A5/1. CCC's disclosure prompted limited immediate responses from the GSM Association, such as algorithm audits, but upgrades to stronger variants like COMP128-2 and COMP128-3 were gradual, affecting deployment into the 2000s; the event highlighted the risks of closed-source cryptography in mass-market systems, influencing later shifts toward open standards like 3G's mutual authentication. No evidence indicates CCC exploited this for illicit gain; the focus was ethical disclosure to advocate for enhanced privacy and security in telecommunications infrastructure.^[29]

Biometric and Authentication Flaws

In September 2013, shortly after the release of the iPhone 5S, members of the Chaos Computer Club (CCC) demonstrated vulnerabilities in Apple's Touch ID fingerprint sensor by creating a spoofed fingerprint using a high-resolution photograph of the target's print, latex glue, and graphite powder to form a thin, flexible mold that successfully unlocked the device.^[30]^[31] The technique, executed by CCC researcher Jan Krissler (known as "Starbug"), required no specialized equipment beyond a camera and household materials, highlighting the ease of bypassing optical fingerprint scanners reliant on surface pattern matching without liveness detection.^[30]^[32] Building on this, in December 2014, Krissler cloned the fingerprint of German Defense Minister Ursula von der Leyen from standard photographs taken at public events, using photo editing software to enhance ridge details and a commercial artificial fingerprint material to produce a replica that fooled both Samsung Galaxy and GigaFox scanners.^[33]^[34] This demonstration underscored systemic flaws in biometric systems dependent on publicly obtainable images, as the photos were sourced from distances of 1 to 3 meters without physical contact, raising concerns over their deployment in high-security contexts like government access controls.^[33] CCC has extended critiques to other biometrics, with Krissler exposing iris scanning weaknesses in systems like those proposed for Samsung devices, where high-resolution images from 3 meters away could generate printable masks to spoof recognition algorithms lacking robust anti-spoofing measures. In authentication beyond biometrics, CCC researchers in August 2022 circumvented Video-Ident protocols—video-based remote identity verification used by German banks—by employing deepfake techniques and manipulated video streams to impersonate users without accessing the underlying biometric data.^[35] More recently, in July 2024, CCC illustrated persistent risks in SMS-based two-factor authentication (2FA), showing how service providers' bulk SMS gateways could be socially engineered or exploited to intercept codes, bypassing the second factor entirely despite its widespread adoption as a security enhancement.^[36] These demonstrations consistently emphasize that authentication mechanisms, including biometrics, fail against determined low-tech attacks when not paired with multi-layered defenses like behavioral analysis or hardware tokens, prompting CCC to advocate for open disclosure of such flaws to drive systemic improvements.^[30]^[36]

Project Blinkenlights (2001)

Project Blinkenlights was an interactive public art installation initiated by the Chaos Computer Club (CCC) in Berlin to mark the group's 20th anniversary.^[37] The project converted the facade of the Haus des Lehrers building at Alexanderplatz into a massive monochromatic display by placing high-powered lamps behind the windows of the upper eight floors, effectively creating the world's largest computer screen using rudimentary hardware.^[38] This setup highlighted CCC's emphasis on innovative, low-cost technical experimentation, transforming an underutilized structure into a visible demonstration of hacker ingenuity visible from afar, including Tegel Airport.^[37] Technically, the installation comprised 144 pixels, with each of the 18 windows per floor equipped with a 150-watt halogen lamp mounted on a custom tripod and controlled by relay switches.^[38] Approximately 5,000 meters of cabling connected the lamps to a network of three dedicated computers handling overall control, content playback, and user interactivity via telephone or web interfaces.^[38] Content was rendered in simple black-and-white animations at low resolution, limited by the hardware's binary on-off states, yet capable of displaying user-submitted short films, drawings via a tool called Blinkenpaint, and classic games like Pong and Tetris.^[37] Remote participants accessed these features through the project's website at blinkenlights.de, allowing global contributions that cycled through a queue of submissions.^[37] The display operated from September 12, 2001, until February 23, 2002, drawing significant public engagement with roughly 10,000 daily visitors to the control site and generating crowds at the site itself.^[38]^[37] Organized by CCC members such as Tim Pritlove and Andy Mueller-Maguhn, it exemplified the club's approach to blending technical demonstration with cultural commentary, occasionally featuring messages like peace symbols amid contemporary events.^[37] The project's success underscored the accessibility of digital interactivity using off-the-shelf components, influencing subsequent media architecture initiatives while avoiding reliance on proprietary or surveillance-prone technologies.^[38]

Advocacy and Political Interventions

Critiques of Surveillance Legislation

The Chaos Computer Club (CCC) has long opposed surveillance legislation in Germany and the European Union, arguing that such measures disproportionately infringe on fundamental privacy rights and enable unchecked state overreach without adequate safeguards or proven necessity. In a 2009 expert opinion on the German data retention law (Vorratsdatenspeicherung), the CCC detailed how mandatory storage of telecommunications metadata—such as call durations, locations, and connections—permits reconstruction of individuals' daily routines, social networks, and private activities, effectively ending anonymous and unobserved communication.^[39]^[40] The group contended that the law's broad application lacks proportionality, as it collects data on innocents en masse for speculative future investigations, violating constitutional protections under Article 10 of the German Basic Law.^[39] In response to proposed expansions of data retention, the CCC issued warnings in 2023 against a draft law on "digital violence" that would indirectly mandate retention of IP addresses and user data from online platforms, describing it as a "massive intrusion into citizens' privacy" disguised as child protection.^[41] The organization has similarly criticized efforts to weaken end-to-end encryption through legislative backdoors, signing an open letter in 2019 that rejected such mandates as they undermine global IT security and facilitate abuse by both governments and criminals.^[42] On the international front, the CCC condemned the United Nations Cybercrime Convention draft in August 2024 as a "surveillance agreement" that grants excessive powers for data interception and compelled decryption, potentially criminalizing security researchers and journalists while ignoring human rights standards.^[43] Regarding EU proposals, the group urged the German government in October 2025 to reject the "Chat Control" regulation (CSAR), which requires scanning encrypted messages for child sexual abuse material, warning that it introduces mass surveillance incompatible with encryption commitments in Germany's coalition agreement.^[22] The CCC has also advocated for a Europe-wide ban on biometric surveillance laws permitting public facial recognition, highlighting in June 2024 how such technologies enable real-time tracking without judicial oversight, as evidenced by flawed accuracy rates and discriminatory error margins in peer-reviewed studies.^[44]

Staatstrojaner Analysis (2011)

In October 2011, the Chaos Computer Club (CCC) reverse-engineered and publicly analyzed a surveillance malware program known as Staatstrojaner, deployed by the Bavarian State Criminal Police Office (Landeskriminalamt Bayern) for remote monitoring of suspects' computers under judicial warrants.^[45] The malware, developed by DigiTask GmbH, was designed to enable keylogging, screen capture, webcam and microphone access, and file exfiltration, ostensibly limited to communications data as permitted by German law.^[46] CCC obtained the binary code anonymously and disassembled it, revealing implementation flaws that undermined its security and proportionality.^[45] The analysis exposed multiple vulnerabilities, including the use of weak RC4 encryption with a hardcoded key, default administrator passwords unchanged from vendor defaults, and unrestricted remote code execution capabilities that allowed unauthorized third parties to load arbitrary programs or escalate privileges beyond the warrant's scope.^[45]^[47] For instance, the trojan's command-and-control server lacked proper authentication, enabling man-in-the-middle attacks, while its logging mechanisms could be disabled remotely, evading oversight.^[48] CCC demonstrated these issues through proof-of-concept exploits, arguing that the software not only failed to protect innocent users' data but also exported "spyware with a badge" unfit for law enforcement use.^[49] Following the October 8, 2011, publication of CCC's report, including source code excerpts and diagrams, several German states admitted deploying similar variants, prompting investigations by the Federal Ministry of the Interior and parliamentary inquiries.^[45]^[50] The Bavarian interior ministry defended the tool as compliant but acknowledged partial flaws, leading to temporary halts in its use.^[51] CCC's findings contributed to subsequent Federal Constitutional Court rulings, such as in 2014, deeming unrestricted content surveillance via trojans unconstitutional without strict safeguards, emphasizing the risks of overreach in digital investigations.^[52] This episode highlighted tensions between state security needs and privacy protections, with CCC positioning its disclosure as a necessary check on unchecked technical incompetence in government tools.^[46]

Engagements with Political Parties and Data Leaks

The Chaos Computer Club has exerted significant influence on the Pirate Party Germany (PIRATEN), which traces its origins to the broader hacker subculture encompassing CCC members and events.^[53] Founded in 2006, the Pirate Party adopted core CCC principles such as digital civil liberties, opposition to excessive data retention, and demands for transparent information policies, with early activists often overlapping between the two groups.^[53] This alignment facilitated informal collaborations, including shared advocacy on issues like net neutrality and criticism of proprietary voting software, though CCC maintained its non-partisan stance by avoiding formal endorsements.^[4] In contrast, CCC's interactions with established parties like the Christian Democratic Union (CDU) have involved direct security disclosures leading to disputes over data handling. In May 2021, CCC-affiliated security researcher Lilith Wittmann identified a vulnerability in the CDU's "CDU Connect" campaign app, where an unprotected web API exposed personal data of approximately 18,500 campaign volunteers—including email addresses and profile photos—and 1,350 registered users, encompassing full addresses, birth dates, and stated political interests.^[54]^[55] Wittmann promptly reported the flaw responsibly to the CDU, Germany's federal CERT team (CERT-Bund), and Berlin's data protection authority, adhering to coordinated vulnerability disclosure protocols.^[54] The CDU responded by immediately shutting down the app on May 25, 2021, and notifying potentially affected users of the exposure risk, but then initiated a criminal complaint against Wittmann for alleged unauthorized access, which the party withdrew on August 4, 2021, amid public backlash, accompanied by an apology from CDU digital policy spokesperson Stefan Hennewig.^[56]^[57] CCC criticized the initial complaint as an attempt to intimidate ethical researchers—"shooting the messenger"—and announced on August 5, 2021, that it would terminate all future cooperation with the CDU, including refusals to disclose additional vulnerabilities unless mediated through independent authorities.^[58] This episode underscored CCC's policy of prioritizing empirical security assessments over political alliances, while highlighting perceived deficiencies in parties' incident response maturity.^[54] Beyond specific incidents, CCC has engaged parties through advisory roles on election integrity, such as analyzing insecure vote-counting software like PC-Wahl in 2017, which multiple parties relied upon, and urging reforms to prevent manipulation without attributing faults to any single entity.^[59] These interventions reflect CCC's broader pattern of non-partisan technical scrutiny, often pressuring parties across the spectrum to address systemic data risks rather than endorsing partisan outcomes.^[60]

Events and Knowledge Dissemination

Chaos Communication Congress Series

The Chaos Communication Congress is the Chaos Computer Club's annual flagship conference, held over four days from December 27 to 30, emphasizing discussions on technology, society, and utopian possibilities.^[3] Established in 1984 as the club's primary gathering for knowledge exchange, it originated in Hamburg, Germany, and has since become Europe's premier hacker conference, drawing participants interested in digital security, privacy advocacy, and critical infrastructure analysis.^[61] ^[62] The event format includes expert lectures, interactive workshops, hands-on demonstrations, assembly meetings, and entertainment such as live music and art installations, fostering collaboration among hackers, researchers, journalists, and activists.^[63] Attendance has expanded from hundreds in early editions to over 17,000 in recent years, supported by more than 2,000 volunteers, with features like real-time multilingual interpretation in main halls.^[3] ^[64] ^[65] Venue locations have shifted to accommodate growth: after initial Hamburg events, the congress relocated to Berlin in 1998 for nearly two decades, returned to Hamburg in 2012 for five iterations, moved to Leipzig for three years from 2018, transitioned to a fully remote "rC3" format in 2020 and 2021 amid the COVID-19 pandemic, and resumed in-person in Hamburg starting with the 37C3 in 2022.^[3] ^[61] Sessions often highlight ethical hacking demonstrations, critiques of surveillance technologies, and policy interventions, aligning with the club's mission to promote transparency and civil liberties in digital domains.^[62] The congress's volunteer-led structure and open call for proposals ensure diverse, peer-reviewed content, positioning it as a key venue for advancing public discourse on information freedom and technological risks.^[3]

Chaos Communication Camp and CryptoParties

The Chaos Communication Camp is a quadrennial open-air gathering organized by the Chaos Computer Club (CCC), first held in 1999 as an international forum for hackers to exchange technical, social, and political ideas in a relaxed outdoor environment.^[66] Held every four years in August over five days near Berlin, Germany, the event emphasizes free knowledge sharing among participants, including workshops, demonstrations, and informal networking.^[66] Early editions took place near Paulshof in Altlandsberg in 1999 (August 6–8) and 2003, followed by the Luftfahrtmuseum Finowfurt site in 2007 and 2011, with subsequent camps returning to Ziegeleipark Mildenberg in Zehdenick for 2015, 2019, and 2023 (August 15–19).^[66] Attendance has grown significantly, reaching thousands of hackers, artists, and activists by recent iterations, fostering self-organized "villages" and infrastructure like temporary networks for collaborative projects.^[67] Activities at the camp prioritize hands-on hacking, with participants erecting tents, setting up power grids, and conducting sessions on topics from hardware tinkering to digital rights advocacy, all under CCC's ethos of transparency and civil liberties.^[66] Unlike indoor conferences, the camp's remote setting encourages extended stays and emergent communities, such as themed sub-camps focused on specific technologies or causes.^[66] The 2023 edition, for instance, hosted over 4,000 attendees amid discussions on contemporary issues like encryption policy and surveillance resistance.^[67] Complementing larger events like the camp, the CCC promotes CryptoParties through its local chapters and congress assemblies to democratize practical cryptography and digital privacy skills.^[68] These grassroots workshops, integrated into CCC gatherings since at least the 30th Chaos Communication Congress in 2013, teach attendees— from novices to experts—tools for secure communication, such as Tor for anonymity and encryption software for data protection.^[68] Sessions emphasize peer-to-peer knowledge transfer, covering applications like browser extensions for secure data handling and best practices for hosting similar events, aligning with CCC's long-standing advocacy for individual empowerment against state and corporate surveillance.^[68] Local chapters, including in Luxembourg, have organized standalone CryptoParties since the early 2010s, providing free, non-commercial instruction on topics like end-to-end encryption and metadata minimization.^[69] By fostering these decentralized initiatives, the CCC extends its educational outreach beyond formal events, prioritizing verifiable, open-source methods over proprietary solutions.^[68]

Publications like Datenschleuder

Die Datenschleuder, translated as "data slingshot," serves as the Chaos Computer Club's primary magazine, emphasizing technical dissections of digital systems, privacy advocacy, and critiques of state surveillance. Launched in 1984 with a modest two-page introductory letter outlining the CCC's ethos, the publication has appeared irregularly thereafter, often synchronized with events like the Chaos Communication Congress.^[12] ^[70] Issues feature articles on cryptography, network security flaws, and policy implications of technologies such as closed-circuit television and proprietary software. Examples include analyses of the XMPP protocol, intelligence agency networks like the BND, and broader themes of cyberpunk ideology alongside data protection strategies.^[71] ^[72] Print subscriptions operate independently of CCC membership, while digital editions in PDF and ePUB formats are freely downloadable, fostering community submissions and reflecting the club's commitment to open knowledge dissemination.^[71] Beyond Die Datenschleuder, the CCC has issued specialized books like the Hackbibel series, which detail practical security testing and ethical hacking methodologies as of editions released around 2024. These complement the magazine by providing focused, actionable resources, though the club prioritizes event media archives and audio formats like the monthly Chaosradio broadcast for ongoing discourse over additional periodical prints.^[73] ^[4]

Controversies and Legal Challenges

Karl Koch's Involvement and Suicide (1980s)

Karl Koch, born on August 22, 1965, in Hanover, Germany, joined the Chaos Computer Club (CCC) in the early 1980s as a young enthusiast exploring computer security boundaries.^[74] While loosely associated with the CCC during this period, Koch operated through an independent hacking group that was not sanctioned by the organization, which later distanced itself from his activities.^[75] His pseudonym, "Hagbard Celine," derived from the countercultural novel The Illuminatus! Trilogy, reflected his immersion in conspiracy theories and esoteric interests.^[75] In 1986, Koch collaborated with hackers including Markus Hess to breach U.S. military networks via ARPANET, targeting sites such as the Lawrence Berkeley National Laboratory and the U.S. European Command (USEUCOM).^[76] The group extracted non-critical data, which Koch sold to a KGB agent, Sergei Markov, in East Berlin for cash and drugs amid his struggles with cocaine addiction and financial desperation.^[76] This episode, known as the "KGB Hack," marked one of the earliest documented cases of state-sponsored cyber-espionage involving Western hackers, though the intelligence obtained was of limited strategic value.^[76] Koch's motivations blended ideological fascination with conspiracy narratives and personal gain, rather than direct alignment with CCC's advocacy for transparency and civil liberties.^[75] Following investigations triggered by U.S. authorities detecting the intrusions, Koch faced charges related to espionage and unauthorized access.^[77] He was arrested but released pending trial, agreeing to cooperate with prosecutors, which exposed internal tensions within hacker circles and drew media scrutiny to the CCC's peripheral links.^[76] On May 23, 1989, Koch, aged 23, was last seen alive before driving to a forest north of Hannover near Celle, where his charred body was later discovered, having been doused in gasoline and set ablaze.^[75] Authorities ruled the death a suicide by self-immolation, citing the absence of signs of struggle and the presence of a melted gasoline canister, though no suicide note was found.^[78]^[75] Speculation of foul play persists among associates and theorists, fueled by the timing shortly before his testimony, his paranoia over Illuminati conspiracies, and the dramatic method, but forensic evidence supported the official determination without conclusive proof of external involvement.^[75]^[74] The incident underscored risks in underground hacking but did not implicate the CCC directly, which maintained its focus on ethical disclosure over espionage.^[75]

Domscheit-Berg Internal Dispute (2010s)

Daniel Domscheit-Berg, a former WikiLeaks spokesperson and CCC member since the mid-2000s, faced internal repercussions within the Chaos Computer Club following his departure from WikiLeaks in September 2010 and the launch of his alternative platform, OpenLeaks.^[79] Domscheit-Berg had initially connected with Julian Assange at the CCC's 2007 Chaos Communication Camp, which facilitated his involvement in WikiLeaks' early operations.^[80] By 2011, amid escalating public disputes with Assange—including Domscheit-Berg's admission of destroying over 3,500 unpublished WikiLeaks submissions to prevent mishandling—tensions arose over his use of CCC platforms to promote OpenLeaks.^[81] On August 11, 2011, during the CCC's annual summer camp in Friedrichshafen, Domscheit-Berg presented OpenLeaks, announcing its preliminary launch and soliciting CCC members to test its security features.^[82] This action prompted immediate backlash from CCC leadership, who accused him of exploiting the club's reputation and network for personal gain without authorization, thereby risking the organization's impartiality in data transparency advocacy.^[80] CCC spokesman Andy Müller-Magahn publicly stated doubts about Domscheit-Berg's integrity, citing concerns over his handling of sensitive WikiLeaks materials and the potential for OpenLeaks to undermine broader whistleblower principles through opaque data management.^[79] The CCC board formalized the dispute by expelling Domscheit-Berg on August 14, 2011, via an official statement emphasizing the need to protect the club's credibility amid his controversial actions.^[83] This decision highlighted internal fractures within the German hacking community over ethical standards for data handling and organizational independence, with critics arguing that Domscheit-Berg's unilateral destruction of submissions contradicted CCC's emphasis on verifiable transparency.^[84] However, following member feedback and a review process, the CCC reversed the expulsion on February 6, 2012, reinstating Domscheit-Berg without further public commentary on the underlying issues.^[85] The episode underscored broader debates in the CCC about balancing individual initiatives with collective reputation, particularly in the context of post-WikiLeaks fragmentation, where Domscheit-Berg's project failed to gain traction despite initial CCC-adjacent promotion.^[86] No legal proceedings ensued, but the dispute strained relations and contributed to scrutiny of whistleblower platforms' internal governance.^[87]

Unauthorized Access Repercussions and Government Responses

In October 1984, members of the Chaos Computer Club (CCC) demonstrated vulnerabilities in the German Bildschirmtext (BTX) online service operated by Deutsche Bundespost by gaining unauthorized access to a bank's account and initiating transfers totaling 135,000 Deutsche Marks to a CCC-controlled account.^[28] The group promptly reversed the transactions and notified authorities, framing the action as a proof-of-concept to highlight systemic security flaws in the nascent electronic payment infrastructure.^[26] No criminal charges were filed against the perpetrators, though the incident prompted Deutsche Bundespost to acknowledge the weaknesses and implement rudimentary fixes, marking an early instance where CCC's unauthorized access yielded publicity without direct legal penalties.^[12] During the mid-1980s, loosely affiliated CCC members, including Markus Hess and Karl Koch, conducted unauthorized intrusions into U.S. military and research networks, such as Lawrence Berkeley National Laboratory, extracting sensitive data that was subsequently sold to the Soviet KGB for approximately $54,000.^[88] Hess was arrested on June 29, 1987, following tracing by astronomer Cliff Stoll, and convicted of espionage on February 15, 1990, alongside two accomplices, facing potential sentences of up to five years under German law.^[89] Koch, implicated in the same network, died by suicide in May 1989 amid investigations, amplifying scrutiny on the broader German hacker community.^[90] These cases, while not officially endorsed by CCC leadership, led to widespread media condemnation of the group, tarnishing its reputation and prompting internal reflections on affiliations with ideologically motivated actors.^[90] German authorities responded to these and similar incidents by intensifying monitoring of hacker associations, contributing to the enactment of stricter data protection statutes like § 202a-c of the Criminal Code (StGB), which criminalize unauthorized data access and espionage with penalties up to five years imprisonment.^[91] Subsequent police actions included raids on CCC-affiliated spaces, such as the 2018 searches of the Augsburg OpenLab and homes of Tor-supporting group Zwiebelfreunde members, justified by tenuous links to anonymous online calls for protests rather than proven hacking.^[92] CCC criticized these operations as disproportionate overreach, arguing they reflected government discomfort with privacy advocacy rather than evidence of criminality, though no convictions directly tied to CCC-organized unauthorized access have resulted in modern cases.^[93]

Imitation Groups and Fraudulent Claims

In 1989, French intelligence agency Direction de la Surveillance du Territoire (DST), via informant Jean-Bernard Condat and handler Jean-Luc Delacour, orchestrated the creation of the Chaos Computer Club France (CCCF) in Lyon as a counterfeit entity imitating the German Chaos Computer Club to penetrate and monitor emerging French hacker networks.^[94] This sham organization masqueraded as an official national affiliate, hosting fabricated events and gatherings to attract genuine hackers for intelligence gathering, but operated without any affiliation to or endorsement from the authentic CCC.^[95] The deception was later exposed through disclosures by former participants and hacker community investigations, highlighting state-sponsored mimicry to subvert digital subcultures under the guise of grassroots activism.^[94] Beyond institutional imitations, the CCC's name has been exploited in online fraud schemes, particularly sextortion emails purporting to originate from a "ChaosCC hacker group"—a misspelled variant leveraging the CCC's established reputation for technical exploits. These campaigns, documented since August 2019, falsely claim hackers accessed victims' email and webcam data between specific dates (e.g., March to September 2024 in recent variants), demanding Bitcoin payments (often 0.5–1 BTC) to withhold alleged compromising videos or information.^[96] Such impersonations follow standard extortion templates, fabricating breach details without evidence of actual intrusion, and prey on recipients' fears amplified by the CCC's real-world demonstrations of vulnerabilities like fingerprint spoofing.^[97] No genuine CCC involvement exists in these operations, which authorities classify as opportunistic scams unrelated to the group's ethical hacking principles.^[96]

Recent Developments and Broader Impact

Activities from 2020 Onward

The Chaos Computer Club resumed its annual Chaos Communication Congress after a hiatus following the 36C3 in 2019, with the 37C3 titled "Unlocked" held from December 27 to 30, 2023, in Hamburg, focusing on themes of digital access and security amid post-pandemic recovery.^[3] This event marked a return to in-person gatherings, featuring lectures on technology, privacy, and societal impacts, with subsequent editions including the 38C3 "Illegal Instructions" in December 2024 and preparations for the 39C3 "Power Cycles" scheduled for December 27 to 30, 2025, emphasizing energy, power dynamics, and technological cycles.^[98]^[3] In response to pandemic-era digital tools, the CCC criticized Germany's Luca contact-tracing app in April 2021, demanding an immediate moratorium due to its flawed software, dubious business model, and irregularities in contract awards, which risked user privacy through inadequate data handling.^[99] The organization also scrutinized centralized versus decentralized approaches in COVID-19 tracing apps, highlighting pseudonymization delays and potential for government overreach in data collection.^[100] From 2024 onward, the CCC intensified efforts against surveillance expansions, signing an open letter in December 2024 rejecting EU recommendations for unrestricted access to personal data and mass scanning of encrypted communications, arguing such measures undermine civil liberties without proven security benefits.^[101] In March 2025, it advocated for "digital firewalls" including bans on biometric mass surveillance in public spaces and untargeted internet analysis, prioritizing resilience against state and corporate overreach.^[102] Later that year, in October 2025, the CCC co-published a report with partners decrying the illegality of proposed biometric surveillance plans and Palantir integrations, citing violations of data protection laws.^[103] The CCC continued exposing data vulnerabilities, revealing leaks in February 2025 at legal-tech platforms myright.de and euflight.de, compromising personal data of 325,000 users through misconfigured access controls, and in June 2025 at hotel chain Numa, affecting over 500,000 invoices and identification documents.^[104] It also supported ethical hackers in 2024 by fundraising €30,000 at 38C3 for those demonstrating vulnerabilities in Newag railway systems, underscoring ongoing commitments to transparency in critical infrastructure.^[105] These actions align with the club's tradition of proactive security audits, often prompting affected entities to remediate flaws.

Influence on Policy, Security Practices, and Criticisms of Overreach

The Chaos Computer Club (CCC) has exerted considerable influence on German policy regarding digital privacy and surveillance. In 2006, CCC researchers demonstrated how Nedap ES3B electronic voting machines could be manipulated without detection, prompting a nationwide debate and legal challenges against their deployment.^[106] This analysis contributed to the Federal Constitutional Court's 2009 ruling that electronic voting systems violated constitutional requirements for verifiable elections, mandating transparent, publicly observable processes.^[107] CCC's 2011 reverse-engineering of the "Bundestrojaner," a state-authorized surveillance malware deployed by German authorities, revealed severe implementation flaws, including remote code execution capabilities, unencrypted data transmission, and the potential for interception by third parties.^[45] The disclosure highlighted risks of abuse and inadequate safeguards, fueling parliamentary inquiries and stricter judicial oversight on "quellen-TKÜ" (source telecommunications surveillance) under Article 10 of the German Telecoms Act, though the practice persisted with modifications.^[46] In terms of security practices, CCC's demonstrations have promoted principles of transparency and open auditing across sectors. Their exposure of vulnerabilities in systems like biometric passports in 2008 and online video identification in 2022 underscored the dangers of proprietary, unverified software, advocating for open-source alternatives and rigorous independent testing.^[4] ^[35] These efforts have informed industry standards, encouraging organizations to prioritize verifiable security over opaque implementations, as seen in subsequent EU-wide discussions on digital identity frameworks. Criticisms of CCC's methods center on perceived overreach through unauthorized system intrusions to prove points, which some argue blurs ethical lines and could legitimize broader hacking. For instance, the 1986 breach of government networks to uncover suppressed Chernobyl radiation data, while exposing official underreporting, involved illegal access that drew condemnation for circumventing legal channels.^[108] Security commentators have also questioned the maturity of debates sparked by CCC's Bundestrojaner analysis, suggesting it overstated risks relative to necessary law enforcement tools and ignored contextual safeguards.^[109] Despite such views, empirical outcomes like policy reforms indicate CCC's interventions have enhanced systemic resilience without evidence of systemic harm from their advocacy.

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Remove “ChaosCC hacker group” email scam - Soft2Secure
Sep 4, 2019 · One of such hoaxes circulating in August 2019 revolves around an impersonation of the ChaosCC hacker group, which is probably a peculiar way the ...<|separator|>
[98]
Lectures, music, art, punk: Join us at the 39th Chaos Communication ...
Sep 28, 2025 · The Chaos Computer Club (CCC) is inviting to the 39th Chaos Communication ... The deadline for all submissions for the stages is October 24, 2025, ...Missing: activities | Show results with:activities
[99]
Luca App: CCC calls for an immediate moratorium
Apr 13, 2021 · Dubious business model, defective software, irregularities in the awarding of contracts: The Chaos Computer Club (CCC) demands an immediate end ...Missing: criticism | Show results with:criticism
[100]
Germany's epic corona-tracing debate: a risky game with public trust
May 6, 2020 · ... Chaos Computer Club pointed out delays in the pseudonymization of personal data. Contact tracing: centralized or decentralized? Among all ...
[101]
Against new excessive surveillance plans - CCC
Dec 11, 2024 · The Chaos Computer Club signs an open letter rejecting the recommendations of an EU working group that call for unrestricted access to all personal data.
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CCC demands digital infrastructures that are resilient against ...
Mar 6, 2025 · We are calling for a serious paradigm shift in German digital policy to prevent the foreseeable abuse of power. Mass surveillance must be clearly rejected.
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https://www.ccc.de/en/updates/2025/gesichtserkennung-und-palantir-dobrindts-uberwachungspaket-muss-vom-tisch
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CCC | Updates
### Summary of Chaos Computer Club (CCC) Activities, Statements, and Events (2020–2025)
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CCC | They have not been trained for this - Chaos Computer Club
Dec 27, 2024 · We assume that the current lawsuits are aimed at preventing these - and future - publications about such 'illegal instructions'. But at ...<|separator|>
[106]
Chaos Computer Club condemns e-voting machine - The Register
Oct 10, 2006 · The German Computer Chaos Club, Europe's largest hacker group, has called for a ban on the Nedap ES3B voting machine and similar computers ...
[107]
Federal Constitutional Court Stops Electronic Voting Roulette - CCC
Mar 4, 2009 · The Federal Constitutional Court decided today that the use of voting computers is unconstitutional. Rather, elections in Germany must be ...
[108]
The Chaos Computer Club Exposes Chernobyl Data
May 1, 2024 · A deadly incident, fabrication of truth: In 1986, Chaos Computer Club hacked German Govt's systems, revealing Chernobyl data. Read more.
[109]
German "government trojan" debate is infantile - Risky Business Media
By now you've likely read about the German Chaos Computer Club's (CCC) reverse engineering of the so-called "Bundestrojaner," or "federal trojan". Someone ...