SentinelOne
SentinelOne, Inc. is an American cybersecurity company founded in 2013 and headquartered in Mountain View, California, specializing in AI-powered platforms for autonomous threat detection, prevention, and response across endpoints, cloud, identity, and data.[1][2] The company's Singularity platform employs machine learning to analyze behaviors at machine speed, enabling real-time mitigation of attacks without reliance on traditional signature-based methods.[2][3] Established by Tomer Weingarten, Almog Cohen, and Ehud Shamir with roots in Israeli cybersecurity expertise, SentinelOne pioneered endpoint protection that evolved into a comprehensive enterprise security suite, going public on the New York Stock Exchange under the ticker S in 2021.[4][5] Its growth has been marked by annual recurring revenue increases exceeding 30% in recent fiscal years, driven by adoption in sectors facing escalating ransomware and advanced persistent threats.[6] SentinelOne has earned recognition as a leader in Gartner's Magic Quadrant for endpoint protection platforms and topped Deloitte's Technology Fast 500 as the fastest-growing public cybersecurity firm in North America.[7][8] While praised for innovation in autonomous security operations, the platform has drawn user critiques regarding deployment complexities and support responsiveness in high-volume environments, though these have not impeded its market expansion.[9][10]
History
Founding and Early Development
SentinelOne was founded in 2013 in Tel Aviv, Israel, by Tomer Weingarten, Almog Cohen, and Ehud Shamir.[11][12] The co-founders, drawing from expertise in cybersecurity and defense, aimed to develop an autonomous endpoint protection platform that addressed limitations of traditional antivirus solutions through behavioral analysis and machine learning.[13][14] Weingarten, who serves as CEO, envisioned transforming organizational cybersecurity by enabling real-time threat prevention without reliance on human intervention or signature-based detection.[14] In 2014, SentinelOne expanded to the United States by opening its headquarters in Mountain View, California, facilitating access to the North American market.[15] That year, the company secured its first customer sale, validating the core technology developed during its initial phase.[15] Early development focused on building the Singularity platform's foundational AI-driven capabilities, culminating in the 2015 launch of its endpoint protection solution—the first to incorporate behavioral AI for autonomous threat detection and response.[4][16] This innovation shifted endpoint security from reactive measures to proactive, story-based threat hunting, setting the stage for broader adoption.[4]
Growth and Initial Funding
SentinelOne secured its initial seed funding of $20,000 in March 2013, followed by an additional $2.5 million seed round in August 2013 from investors including Data Collective.[17][18] In April 2014, the company raised $12 million in a Series A round led by Tiger Global Management, which supported early product development and market entry.[19][17] These early investments enabled SentinelOne to launch its endpoint protection platform in 2015, marking a key milestone in shifting from research to commercial deployment.[16] The platform's AI-based autonomous threat detection differentiated it from traditional antivirus solutions, driving initial customer adoption among enterprises seeking advanced endpoint security. In October 2015, SentinelOne raised $25 million in Series B funding led by Third Point Ventures, with participation from existing investors like Tiger Global and Data Collective, to accelerate sales and displace legacy antivirus vendors.[20] Subsequent growth was evidenced by a $70 million Series C round in January 2017, led by Redpoint Ventures and including Sound Ventures, bringing total funding to over $110 million and reflecting rising demand for the company's next-generation endpoint protection amid increasing cyber threats.[21] This period saw SentinelOne expand its engineering and sales teams, enter new markets, and build a customer base that valued its behavioral AI capabilities over signature-based detection, positioning the company for unicorn status in later rounds.[22]Initial Public Offering and Post-IPO Expansion
SentinelOne conducted its initial public offering on June 30, 2021, listing Class A common stock on the New York Stock Exchange under the ticker symbol "S."[23] The company offered 35 million shares at $35 each, raising approximately $1.23 billion in gross proceeds, with underwriters exercising a full greenshoe option for an additional 5.25 million shares, bringing total proceeds to about $1.33 billion.[24] Shares opened at $46 and closed at $42.50 on the first trading day, reflecting a 21% gain from the IPO price and valuing the company at nearly $11 billion.[25] This IPO marked SentinelOne as one of the highest-valued cybersecurity offerings at the time, amid strong investor interest in endpoint detection and response technologies.[26] Following the IPO, SentinelOne pursued expansion through revenue acceleration, strategic acquisitions, and platform enhancements. Annual recurring revenue (ARR) grew from pre-IPO levels to surpass $1 billion by the second quarter of fiscal year 2026 (ended July 31, 2025), with total revenue increasing 32% year-over-year to $821.5 million in fiscal year 2025.[27] [28] International markets accounted for 38% of revenue in that quarter, expanding 27% year-over-year, driven by deepened penetration in Europe, Asia-Pacific, and other regions.[29] The company grew its employee base to approximately 2,800 by mid-2025, supporting scaled operations and R&D investments in AI-driven security features.[30] Key to post-IPO growth were acquisitions integrating identity, cloud, and generative AI capabilities into the Singularity platform. In 2022, SentinelOne acquired Attivo Networks for $616.5 million in cash and stock, enhancing deception-based threat detection and identity security within its extended detection and response (XDR) framework.[31] Subsequent deals included Prompt Security in August 2025 for around $180–250 million, adding real-time generative AI visibility and policy controls, and Observo AI in September 2025 for $225 million, bolstering data ingestion for security information and event management (SIEM) and telemetry processing.[32] [33] These moves, part of five total acquisitions since the IPO, facilitated broader platform adoption amid decelerating organic growth rates—from over 100% pre-IPO to 22–32% in recent fiscal years—while addressing competitive pressures in the cybersecurity sector.[34] [35]Products and Technology
Singularity Platform Overview
The SentinelOne Singularity Platform is a unified, AI-native extended detection and response (XDR) solution designed to deliver autonomous cybersecurity across endpoints, cloud environments, and identities. It integrates endpoint protection platform (EPP) and endpoint detection and response (EDR) functionalities with broader capabilities such as identity threat detection and response (ITDR), threat hunting, and network discovery, enabling real-time visibility and remediation of threats without requiring constant human oversight.[36][37] At its core, the platform relies on the Singularity Data Lake, a cloud-scale repository that aggregates telemetry from endpoints, cloud workloads, identities, and third-party sources, providing 90-day data retention and scalable storage for analysis. This architecture supports seamless integrations with external security tools, coalescing disparate data into a single pane for unified threat intelligence and response workflows. The platform's modular design includes foundational elements like Singularity Enterprise for core protection, detection, and remediation, alongside specialized components such as Singularity Network Discovery for real-time network mapping and Singularity RemoteOps for digital forensics and evidence collection.[36] Key capabilities span endpoint security through autonomous prevention and rollback of attacks, cloud protection for workloads, containers, and connected devices, and identity safeguards against credential-based exploits via behavioral analytics in ITDR. AI drives these functions, with Purple AI serving as an advanced analyst tool that processes natural language queries, generates intelligent summaries of incidents, and accelerates threat investigations and hunting. Additional services like WatchTower provide managed expert-led threat hunting to supplement automated operations.[36][37]Core Features and AI Integration
SentinelOne's Singularity Platform centers on autonomous endpoint protection, leveraging artificial intelligence for real-time threat detection, prevention, and response across devices, cloud workloads, and identity systems. Core features include behavioral analysis engines that monitor system activities to identify malicious patterns without predefined signatures, enabling proactive blocking of zero-day exploits and ransomware. The platform's static AI component scans files and binaries at ingestion to flag known vulnerabilities, complementing dynamic behavioral monitoring for layered defense. These capabilities operate with minimal latency, processing threats in milliseconds to minimize dwell time.[37][38] A key differentiator is the integration of Storylines, an AI-driven visualization tool that constructs chronological narratives of security incidents by correlating endpoint data, network events, and user behaviors into coherent attack stories. This facilitates rapid triage by security teams, reducing mean time to response (MTTR) through automated insights rather than manual log parsing. The platform also supports autonomous remediation, where AI algorithms isolate compromised endpoints, terminate malicious processes, and, in advanced configurations, execute rollback functions to restore systems to pre-breach states without human intervention. Such automation extends to cloud-native environments, integrating with workload protection to enforce policies via AI-evaluated risk scoring.[37][39] AI integration in SentinelOne emphasizes machine learning models trained on vast datasets of attack behaviors, enabling the platform to adapt to evolving threats without frequent signature updates. Features like the AI Security Assistant provide natural language querying for threat investigations, while broader Singularity XDR (Extended Detection and Response) unifies endpoint, cloud, and identity signals into a single AI-powered data lake for holistic visibility. This approach contrasts with rule-based systems by prioritizing causal inference from behavioral anomalies over heuristic matching, though efficacy depends on proper tuning to avoid false positives in diverse enterprise environments. Independent evaluations, such as those from MITRE, have noted high detection rates for advanced persistent threats, attributing success to the platform's emphasis on autonomous operations over human-dependent workflows.[37][40][39]Endpoint, Cloud, and Identity Protection Capabilities
SentinelOne's Singularity platform integrates endpoint protection through its Singularity Endpoint module, which employs autonomous AI-driven prevention to detect and block malware at machine speed using on-device behavioral and static analysis models.[41] This includes real-time response to ransomware and zero-day threats, with capabilities for automated rollback of unauthorized changes and discovery of uncatalogued network devices.[42] The endpoint security extends to mobile devices and incorporates extended detection and response (EDR) features, providing visibility into system-level and identity-based attacks while enriching threat intelligence.[43] For cloud protection, the Singularity Cloud Security component functions as a cloud-native application protection platform (CNAPP), combining cloud security posture management (CSPM), cloud workload protection (CWPP), cloud detection and response (CDR), cloud infrastructure entitlement management (CIEM), and data security posture management (DSPM).[44] It offers agentless deployment with an Offensive Security Engine for multi-cloud environments, enabling real-time monitoring and remediation of vulnerabilities in assets like virtual machines, containers, and storage buckets such as Amazon S3 or Azure Blob.[45] The system proactively defends against runtime threats including ransomware and AI-powered attacks, shifting security leftward from build time to runtime with verified exploit path analysis.[46] Identity protection is handled via Singularity Identity Detection and Response, targeting Active Directory and Entra ID to counter credential theft, misuse, and lateral movement by attackers.[47] Key mechanisms include cloaking sensitive data, deflecting unauthorized access, and continuous monitoring of authentication events and identity relationships across cloud and on-premises systems.[48] Singularity Identity Posture Management identifies vulnerabilities in identity infrastructure, while endpoint agents detect misuse within processes, integrating with the broader platform for unified threat response.[49] These features collectively enhance containment of in-network threats and insiders through real-time defense and automated actions.[50] The unified Singularity architecture leverages a Security Data Lake for seamless data correlation across endpoint, cloud, and identity layers, enabling autonomous orchestration and AI-enhanced investigations without silos.[1] This integration supports comprehensive protection for enterprise environments, with reported efficacy in preventing advanced persistent threats through behavioral AI and machine learning.[37]Business Operations
Funding and Financial Performance
SentinelOne raised approximately $697 million in venture capital funding across nine rounds prior to its initial public offering.[18] The company's first funding occurred on March 15, 2013, with subsequent early-stage investments including a $25 million Series B round in October 2015 and a $70 million Series C in January 2017.[11] Later rounds accelerated, featuring a $120 million Series D in June 2019 led by Insight Partners, a $200 million Series E in February 2020 also led by Insight, and a $267 million Series F in November 2020 led by [Tiger Global Management](/page/Tiger Global_Management), which valued the company at over $3 billion.[22][51]| Round | Date | Amount Raised | Lead Investor |
|---|---|---|---|
| Series B | October 2015 | $25 million | N/A[22] |
| Series C | January 2017 | $70 million | N/A[22] |
| Series D | June 2019 | $120 million | Insight Partners[22] |
| Series E | February 2020 | $200 million | Insight Partners[22] |
| Series F | November 2020 | $267 million | Tiger Global Management[51] |
Acquisitions and Strategic Partnerships
SentinelOne has pursued a series of acquisitions to enhance its cybersecurity platform, particularly in areas like cloud observability, identity detection, and AI-driven security. In February 2021, the company acquired Scalyr, a cloud-based log management firm, for approximately $155 million, integrating Scalyr's data analytics capabilities into SentinelOne's Singularity platform to bolster log management and observability features. This move expanded SentinelOne's ability to handle large-scale data processing for threat detection. In March 2022, SentinelOne completed the acquisition of Attivo Networks for $616.5 million, incorporating Attivo's identity detection and response (ITDR) technology to strengthen deception-based defenses against lateral movement in networks.[56] The deal aimed to unify endpoint, cloud, and identity protection under a single autonomous platform. Subsequent acquisitions focused on bolstering AI and cloud-native security. In November 2023, SentinelOne acquired the Krebs Stamos Group, a cybersecurity consultancy founded by former CISA Director Chris Krebs and former Facebook security chief Alex Stamos, to enhance advisory services and policy expertise amid rising geopolitical threats. In January 2024, the company acquired PingSafe, an Indian cloud security startup, integrating its cloud-native application protection platform (CNAPP) to improve risk prioritization and remediation in multi-cloud environments.[57] By August 2025, SentinelOne acquired Prompt Security for an estimated $250 million, targeting generative AI and agentic AI security to provide real-time visibility and control over AI-driven threats.[32] In September 2025, it announced the $225 million acquisition of Observo AI, aimed at revolutionizing security information and event management (SIEM) through hyperscale data infrastructure and AI-powered analytics.[58] In parallel, SentinelOne has formed strategic partnerships to extend its platform's reach and interoperability. The company maintains technology alliances with major cloud providers, including integrations with Amazon Web Services (AWS), Google Cloud, and Microsoft Azure, enabling seamless deployment of its Singularity platform in hybrid environments.[59] In September 2025, SentinelOne partnered with Schwarz Digits to deliver sovereign cybersecurity solutions in Europe, leveraging STACKIT's GDPR-compliant infrastructure for data control and regulatory compliance.[60] That same month, it expanded collaboration with Stamus Networks to integrate network detection and response (NDR) capabilities, enhancing AI-powered security operations for customers.[61] In October 2025, SentinelOne extended its partnership with A1 Digital to Germany, launching managed endpoint security services tailored for European enterprises.[62] These alliances underscore SentinelOne's focus on ecosystem integration and regional expansion to address evolving threats like AI exploitation and cloud vulnerabilities.Market Position and Competitors
SentinelOne occupies a prominent position in the endpoint detection and response (EDR) and extended detection and response (XDR) segments of the cybersecurity market, driven by its AI-centric Singularity platform. The company is recognized as a Leader in the 2025 Gartner Magic Quadrant for Endpoint Protection Platforms, evaluated on completeness of vision and ability to execute.[63] Similarly, it was positioned as a Leader in the 2025 IDC MarketScape for Worldwide XDR Software, highlighting its strengths in technology, strategy, and market impact amid rising demand for autonomous threat detection.[64] As of fiscal year 2025, SentinelOne reported annual recurring revenue (ARR) growth exceeding 30% year-over-year, reflecting robust adoption in enterprise environments despite broader market pressures on cybersecurity valuations.[65] In the competitive landscape, SentinelOne trails market leaders in scale but competes effectively through behavioral AI and autonomous response capabilities. Primary rivals include CrowdStrike, which dominates with its Falcon platform and holds a larger endpoint protection market share estimated at nearly 20%, benefiting from earlier market entry and extensive integrations.[66] Microsoft Defender for Endpoint leverages its integration with the Azure ecosystem and Windows dominance, appealing to organizations prioritizing native cloud-native defenses.[67] Other key competitors encompass Palo Alto Networks' Cortex XDR, emphasizing network-contextual analysis; Sophos Intercept X, noted for managed detection services; and Symantec Endpoint Security, which focuses on legacy antivirus evolution with added EDR features.[67][68]| Competitor | Key Differentiator | Market Focus |
|---|---|---|
| CrowdStrike Falcon | Cloud-native architecture with rapid deployment | Enterprise EDR/XDR with strong threat intelligence |
| Microsoft Defender for Endpoint | Seamless integration with Microsoft 365 and Azure | SMB to enterprise, emphasizing compliance and automation |
| Palo Alto Networks Cortex XDR | Unified analytics across endpoints, networks, and cloud | Large-scale prevention with machine learning correlation |
| Sophos Intercept X | Adaptive threat protection with ransomware rollback | Mid-market, combining EDR with managed services |