SentinelOne History: Founding, Growth & Key Milestones

The genesis of SentinelOne originated from a fundamental realization that traditional antivirus technology was catastrophically obsolete against polymorphic malware and nation-state cyberattacks. In 2013, Israeli intelligence veterans Tomer Weingarten and Almog Cohen recognized that legacy antivirus vendors like Symantec and McAfee relied on static signature databases that could only detect threats after they had already infected other systems. Concurrently, early cloud-based EDR tools required active internet connections to send telemetry back to cloud servers for human analysis, creating critical delay windows during which ransomware could encrypt entire corporate networks. Weingarten and Cohen conceived an entirely new paradigm: an autonomous software agent capable of tracking OS-level system behavior in real time and reversing malicious actions with an automated one-click rollback feature. Incorporating in Mountain View, California, the founders raised initial seed funding to develop their proprietary Storyline technology, which tracks every process, file modification, and network connection into an intelligible causal graph. In June 2021, SentinelOne executed the largest cybersecurity Initial Public Offering in Wall Street history, listing on the New York Stock Exchange under the single-letter ticker symbol 'S' and raising $1.2 billion at a valuation exceeding $10 billion. In 2022, SentinelOne acquired identity security leader Attivo Networks for $616.5 million, embedding credential protection directly into the Singularity fabric.