7AI has raised $130 million in its Series A funding round, making it the biggest Series A ever in the cybersecurity industry.
The funding round was led by Index Ventures, with new investor Blackstone Innovations Investments joining in, along with all the company’s previous Seed investors like Greylock, CRV, and Spark. This brings 7AI’s total funding to $166 million, just 10 months after it came out of stealth in February 2025.
According to the Wall Street Journal, 7AI was valued at $700 million in this latest round.
7AI creates autonomous AI agents that handle security investigations around the world.
In just 10 months, these agents have processed over 2.5 million alerts and completed more than 650,000 investigations, reducing investigation times from hours to minutes and cutting false positives by up to 99%.
7AI was founded by Lior Div, the former CEO of Cybereason, and Yonatan Striem-Amit, Cybereason’s former CTO. Both now hold the same roles at 7AI.
Cybereason, the founders’ previous company, was started in 2012. It became known for its XDR (Extended Detection and Response) platform, threat intelligence team, and digital forensics and incident response (DFIR) capabilities.
The company grew quickly, raising hundreds of millions of dollars. In July 2021, Cybereason reached a peak valuation of around $3 billion—one of Israel’s largest cybersecurity funding rounds—but its valuation fell to about $300 million just a year later.
Between 2022 and 2023, as the IPO market slowed down, Cybereason faced challenges and carried out three major rounds of layoffs.
In October 2024, the company was acquired by LevelBlue, the world’s largest managed security services provider (MSSP), for an undisclosed amount.
“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.”
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