SentinelOne

SentinelOne, Inc. is a cybersecurity company headquartered in Mountain View, California, with roots in Israel and operations serving customers internationally. Founded in 2013 by Tomer Weingarten, Almog Cohen, and Ehud “Udi” Shamir, the company developed around the idea that endpoint security should be able to identify and contain malicious behavior with a high degree of automation rather than depend exclusively on analysts responding manually to alerts. Its technology applies machine learning, behavioral analysis, and a patented behavioral-artificial-intelligence approach to monitoring and responding to activity across personal computers, enterprise endpoints, Internet of Things devices, cloud workloads, and related infrastructure. The company’s principal commercial offering is the Singularity Platform. It combines endpoint protection and endpoint detection and response with broader extended detection and response capabilities. In practical terms, the platform is intended to prevent threats, detect suspicious activity, investigate incidents, and support automated or analyst-directed remediation. SentinelOne has positioned this integrated approach as a way for organizations to consolidate security telemetry and response functions across endpoint, cloud, identity, and other environments. The company emphasizes autonomous protection and AI-assisted security operations as differentiators in a market that includes larger endpoint-security and platform vendors. SentinelOne expanded its capabilities through acquisitions. In 2021 it acquired Scalyr, a cloud-scale data analytics company, adding technology relevant to security data collection and analysis. In 2022 it acquired Attivo Networks, whose identity detection and response technology broadened SentinelOne’s coverage of identity-related threats. The company later acquired Krebs Stamos Group, a cybersecurity advisory firm founded by Chris Krebs and Alex Stamos, and relaunched the business as PinnacleOne Strategic Advisory Group. It also agreed to acquire PingSafe, a cloud security company, and announced proposed or completed transactions involving Prompt Security and Observo AI in 2025, subject to the status and conditions described in the relevant announcements. SentinelOne’s growth was funded through successive private financing rounds before it became a public company. A Series D round in 2019 and a Series E round in 2020 were followed by additional financing that increased the company’s reported valuation. On June 30, 2021, SentinelOne completed an initial public offering on the New York Stock Exchange under the symbol S. The listing gave the company access to public capital while making its financial performance and operating results subject to public-company reporting requirements. The company maintains offices in Mountain View, Boston, Prague, Tokyo, and Tel Aviv, according to the referenced encyclopedia material. It serves enterprise and other organizational customers across international markets. Its stated technology scope extends beyond conventional laptops and servers to include cloud workloads, IoT devices, identity environments, and security operations data. SentinelOne has also received AV-TEST certification for relevant security products. Its long-term strategic direction has increasingly connected endpoint protection with data analytics, cloud security, identity protection, advisory services, and AI-security controls.

SentinelOne was established in 2013 by Tomer Weingarten, Almog Cohen, and Ehud “Udi” Shamir. The company entered the cybersecurity market during a period when conventional signature-based endpoint defenses were increasingly challenged by rapidly changing malware, fileless attacks, and attacks that exploited legitimate administrative tools. SentinelOne’s product concept centered on behavioral analysis and machine learning, with the goal of allowing software to identify malicious patterns and take protective action automatically. The company’s platform was designed to monitor a broad set of computing environments, including personal computers, enterprise endpoints, IoT devices, and cloud workloads. Its behavioral-AI approach became a central part of the company’s differentiation. Rather than treating endpoint protection as only a database of known malicious files, SentinelOne presented its technology as capable of assessing behavior and coordinating prevention, detection, investigation, and remediation. The platform subsequently developed into the Singularity Platform, an umbrella offering associated with endpoint protection, EDR, XDR, cloud security, identity security, and security operations. SentinelOne financed its expansion through major private rounds. In June 2019, Insight Partners led a reported $120 million Series D round. In February 2020, the company raised a further $200 million in Series E financing, with the round placing its reported valuation at approximately $1.1 billion. Later in 2020, another financing event brought total funding and reported valuation figures higher. These rounds supported the company’s efforts to compete in the enterprise security market and expand its product and engineering footprint. Acquisitions became an important element of the company’s product strategy. In February 2021, SentinelOne announced the purchase of Scalyr for $155 million in cash and equity. Scalyr’s cloud-scale data analytics capabilities were relevant to the collection, processing, and analysis of security information. On June 30, 2021, SentinelOne completed its IPO on the New York Stock Exchange, raising approximately $1.2 billion and adopting the ticker symbol S. The public listing marked a major transition from venture-backed growth to public-company operation. In 2022, SentinelOne announced the acquisition of Attivo Networks for $616.5 million in cash and equity. Attivo’s identity detection and response technology broadened SentinelOne’s security coverage beyond endpoints and toward identity-centric attack paths. The company also maintained a visible brand presence through its cybersecurity sponsorship of the Aston Martin Formula One team, which began in 2021. SentinelOne continued to broaden its scope in the following years. In 2023 it acquired Krebs Stamos Group, a boutique cybersecurity consultancy founded by former CISA Director Chris Krebs and former Facebook Chief Security Officer Alex Stamos. The business was relaunched as PinnacleOne Strategic Advisory Group, adding strategic advisory capabilities to SentinelOne’s technology portfolio. In 2024, SentinelOne agreed to acquire PingSafe, extending its cloud-security capabilities. In 2025, the company announced transactions involving Prompt Security and Observo AI. Prompt Security was focused on runtime protection for generative and agentic AI and controls intended to reduce prompt-injection and sensitive-data-leakage risks. Observo AI focused on real-time data-pipeline management, including ingestion, enrichment, summarization, routing, and reduction of telemetry volumes before data reaches SIEM or data-lake systems. The company is headquartered in Mountain View, California, and the referenced material identifies additional offices in Boston, Prague, Tokyo, and Tel Aviv. SentinelOne remains a public cybersecurity company with an international customer base and a strategy built around autonomous protection, AI-assisted security operations, and the convergence of endpoint, cloud, identity, data, and AI security.

1. 2025Prompt Security acquisition agreement

   SentinelOne announces an agreement to acquire Prompt Security to strengthen protection for generative and agentic AI use.

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2. 2025Observo AI acquisition agreement

   SentinelOne announces a proposed acquisition of Observo AI to advance telemetry management and its AI-SIEM strategy.

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3. 2024PingSafe acquisition agreement

   SentinelOne agrees to acquire PingSafe in a transaction reported at more than $100 million.

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4. 2023Krebs Stamos Group acquisition

   SentinelOne acquires Krebs Stamos Group and relaunches it as PinnacleOne Strategic Advisory Group.

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5. 2022Attivo Networks acquisition

   The company announces a $616.5 million acquisition of Attivo Networks, expanding into identity detection and response.

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6. 2021Scalyr acquisition

   SentinelOne announces the acquisition of Scalyr for $155 million in cash and equity.

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7. 2021New York Stock Exchange listing

   SentinelOne completes its IPO on June 30 and begins trading under S.

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8. 2020Series E financing and valuation expansion

   SentinelOne raises $200 million in Series E financing; the round is reported to value the company at about $1.1 billion.

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9. 2019Series D financing

   Insight Partners leads a reported $120 million Series D financing round.

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10. 2013SentinelOne is founded

    Tomer Weingarten, Almog Cohen, and Ehud “Udi” Shamir establish SentinelOne.

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Enterprise cybersecurity centered on autonomous, behavioral-AI-driven prevention, detection, investigation, and response across endpoints, cloud workloads, identities, and security operations.

• Singularity PlatformCybersecurity platform

  SentinelOne’s principal platform brings together capabilities associated with endpoint protection, endpoint detection and response, extended detection and response, cloud workload security, identity protection, and security operations. Its positioning emphasizes behavioral analysis, machine learning, automated prevention, and response across multiple enterprise environments rather than isolated protection of individual devices.

• Endpoint ProtectionEndpoint security

  SentinelOne’s endpoint protection technology monitors computers and other supported endpoints for malicious or suspicious behavior. The company presents the product as combining prevention with behavioral AI and automated response, allowing organizations to contain threats and remediate affected systems while reducing dependence on purely manual investigation.

• Endpoint Detection and ResponseDetection and response

  The company’s EDR capabilities provide security teams with visibility into endpoint activity, threat detection, investigation support, and response functions. EDR forms a core part of SentinelOne’s broader platform strategy, connecting endpoint telemetry with automated actions and analyst workflows.

• Extended Detection and ResponseExtended detection and response

  SentinelOne uses XDR to describe broader correlation and response across security domains beyond traditional endpoints. The offering is associated with connecting endpoint, cloud, identity, and other security signals so that organizations can investigate incidents across environments through a more unified operating model.

• Cloud Workload ProtectionCloud security

  Cloud workload protection extends SentinelOne’s monitoring and response model to workloads operating in cloud environments. The capability is part of the company’s effort to apply behavioral analysis and automated security controls to infrastructure that changes more dynamically than conventional desktop or server estates.

• Identity Detection and ResponseIdentity security2022

  Identity detection and response capabilities were strengthened through the Attivo Networks acquisition. They address identity-related attack activity and complement endpoint-focused controls by helping organizations identify suspicious use of credentials, accounts, and access paths within enterprise environments.

• PinnacleOne Strategic Advisory GroupCybersecurity advisory services2023

  PinnacleOne is the relaunch of Krebs Stamos Group following its acquisition by SentinelOne. It adds strategic cybersecurity advisory and risk-oriented expertise to the company’s technology portfolio, extending the brand beyond software into executive and organizational security guidance.

• 2021Aston Martin Formula One cybersecurity sponsorship

  International · Formula One

  SentinelOne became the official cybersecurity sponsor of the Aston Martin Cognizant Formula One team, using a globally visible sports partnership to associate its brand with high-performance technology and cyber protection.

  Outcome. The sponsorship established a continuing international brand partnership beginning in 2021.

  Source

• 2025Agree to acquire Prompt SecurityM&A

  The rapid adoption of generative and agentic AI created demand for controls addressing AI-tool visibility, prompt injection, and sensitive-data leakage.

  What changed. SentinelOne announced an agreement to acquire Prompt Security for an estimated $250 million in cash and stock.

  Aftermath. The transaction was intended to extend the Singularity Platform into runtime AI security and workplace AI governance; the referenced material states that it closed in SentinelOne’s third fiscal quarter of 2025.

  Estimated acquisition value. Approximately $250 million (2025)

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• 2025Propose acquisition of Observo AIM&A

  SentinelOne sought to improve the handling of high-volume telemetry and accelerate its AI-SIEM strategy.

  What changed. The company announced an intention to acquire Observo AI through a combination of cash and stock, subject to regulatory approval and customary closing conditions.

  Aftermath. The proposed combination was intended to support autonomous security operations by ingesting, enriching, summarizing, and routing security data before it reaches SIEM or data-lake systems.

  Source
• 2024Agree to acquire PingSafeM&A

  SentinelOne continued expanding its cloud-security capabilities.

  What changed. The company agreed to acquire PingSafe in a transaction valued at more than $100 million according to the referenced material.

  Aftermath. The agreement was intended to strengthen SentinelOne’s cloud-security offering.

  Reported transaction value. More than $100 million (2024)

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• 2023Acquire and relaunch Krebs Stamos GroupM&A

  SentinelOne sought to add high-level cybersecurity advisory expertise to its software-centered business.

  What changed. The company acquired Krebs Stamos Group and relaunched it as PinnacleOne Strategic Advisory Group.

  Aftermath. The transaction expanded SentinelOne’s portfolio into strategic cybersecurity advisory services.

  Source
• 2022Acquire Attivo NetworksM&A

  SentinelOne aimed to extend its platform from endpoint security into identity detection and response.

  What changed. The company announced the acquisition of Attivo Networks for $616.5 million in cash and equity.

  Aftermath. Attivo’s identity-security technology expanded SentinelOne’s coverage of identity-centric threats and attack paths.

  Acquisition value. $616.5 million (2022)

  Source
• 2021Acquire ScalyrM&A

  SentinelOne sought to strengthen the data analytics foundation supporting security telemetry and investigation.

  What changed. The company announced a $155 million acquisition of Scalyr using cash and equity.

  Aftermath. The transaction broadened SentinelOne’s capabilities in cloud-scale security data analytics.

  Acquisition value. $155 million (2021)

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• 2021Complete initial public offeringOther

  After several private financing rounds, SentinelOne moved to the public markets to support continued expansion.

  What changed. The company completed its IPO on the New York Stock Exchange on June 30, 2021, under ticker S.

  Aftermath. SentinelOne became a publicly traded cybersecurity company and gained access to public-market capital.

  IPO proceeds. $1.2 billion (June 30, 2021)

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• 2025SentinelOne announces agreement to acquire Prompt Security

  The company announced a definitive agreement to acquire Israeli AI-security startup Prompt Security, extending its platform toward runtime protection for generative and agentic AI use.

  M&AProduct launch
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• 2025SentinelOne announces proposed acquisition of Observo AI

  SentinelOne announced an agreement to acquire Observo AI, whose technology manages and optimizes real-time security data pipelines for telemetry, SIEM, and data-lake environments.

  M&A
  Source
• 2025Chris Krebs resigns from PinnacleOne

  Chris Krebs resigned from SentinelOne’s advisory business after being targeted by an executive order from the Trump administration, according to the referenced material.

  Leadership changeRegulation
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• 2024SentinelOne agrees to acquire PingSafe

  SentinelOne agreed to acquire PingSafe, with the transaction valued at more than $100 million according to the referenced material.

  M&A
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• 2023SentinelOne acquires Krebs Stamos Group

  SentinelOne acquired the cybersecurity consultancy founded by Chris Krebs and Alex Stamos and relaunched it as PinnacleOne Strategic Advisory Group.

  M&A
  Source
• 2022SentinelOne announces acquisition of Attivo Networks

  The company announced a $616.5 million cash-and-equity acquisition of identity detection and response provider Attivo Networks.

  M&A
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• 2021SentinelOne acquires Scalyr

  SentinelOne announced the acquisition of cloud-scale data analytics platform Scalyr for $155 million in cash and equity.

  M&A
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• 2021SentinelOne completes initial public offering

  The company completed its IPO on the New York Stock Exchange on June 30, 2021, raising approximately $1.2 billion and trading under the symbol S.

  Other
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• 2021SentinelOne becomes official cybersecurity sponsor of Aston Martin’s Formula One team

  SentinelOne began an official cybersecurity sponsorship associated with the Aston Martin Formula One team.

  Campaign
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• 2020SentinelOne raises $200 million in Series E financing

  The company announced an additional $200 million financing round, reportedly valuing it at approximately $1.1 billion.

  Other
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• 2019SentinelOne raises $120 million in Series D financing

  Insight Partners led a Series D financing round reported at $120 million.

  Other
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1. SentinelOne
2. SentinelOne official website