Cybereason founders' 7AI raises record $130 million Series A in breakneck rise
Ten months out of stealth, the startup reports 99% reductions in false positives across global deployments.
Boston-based 7AI has announced a $130 million Series A, the largest Series A in the history of the cybersecurity industry.
Full list of Israeli high-tech funding rounds in 2025
The round was led by Index Ventures, with participation from new investor Blackstone Innovations Investments, alongside all existing Seed investors, including Greylock, CRV, and Spark. The financing brings the company’s total funding to $166 million, just 10 months after it exited stealth in February 2025. According to the WSJ, 7AI was valued at $700 million in its latest round.
7AI develops autonomous AI agents that conduct security investigations at global scale. In just 10 months, the company’s agents have processed more than 2.5 million alerts and completed over 650,000 investigations, cutting investigation times from hours to minutes and reducing false positives by up to 99%.
Its customers include Fortune 500 companies across finance, retail, technology, and healthcare, such as DXC Technology, which deployed the solution in only eight weeks.
The company was founded by Lior Div, the longtime CEO of Cybereason, and Yonatan Striem-Amit, the company’s former CTO; both hold the same roles at 7AI.
Cybereason, the founders’ previous company, was established in 2012 and became known for its XDR (Extended Detection and Response) platform, its threat-intelligence team, and its DFIR (Digital Forensics and Incident Response) capabilities. It quickly grew into one of Israel’s most promising cyber startups, raising hundreds of millions of dollars. In its peak fundraising round in July 2021, one of the largest cyber rounds in Israel, Cybereason was valued at approximately $3 billion, a valuation that dropped to about $300 million just one year later.
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In 2022-2023, amid the shutdown of the IPO market, the company faced difficulties and conducted three significant rounds of layoffs between 2022 and 2024. In October, Cybereason was acquired for an undisclosed amount by LevelBlue, the world’s largest managed security services provider (MSSP).
“There's a fundamental flaw in how we've approached security operations for the past two decades. We keep adding more people and detection tools to handle exponentially increasing threats and alerts. The math just doesn't work,” said Div. “We're at an agentic security inflection point that changes the equation entirely. Instead of security teams drowning in investigations that take hours, our AI agents complete them in minutes at a speed, accuracy, and consistency that's difficult for humans and automation to match.”
