Boston-based cybersecurity startup 7AI has announced a $130 million Series A funding round, establishing a record for the largest Series A investment in the cybersecurity industry.
The funding round was led by Index Ventures, with participation from Blackstone Innovations Investments joining as a new investor alongside existing seed backers Greylock Partners, Spark Capital, and CRV.
The investment brings 7AI's total funding to $166 million, achieved just 302 days after the company's launch from stealth in February 2025.
Shardul Shah, a partner at Index Ventures, has joined 7AI's board of directors as part of the financing agreement.
Founded by Lior Div, the former CEO of cybersecurity firm Cybereason, and Yonatan Striem-Amit, Cybereason's former Chief Technology Officer, 7AI develops autonomous AI agents designed to conduct security investigations at scale.
The platform addresses a fundamental challenge in modern security operations: the overwhelming volume of alerts and false positives that overwhelm security teams.
In its first ten months of operation, 7AI's agents have processed more than 2.5 million alerts and completed over 650,000 security investigations across global deployments.
The platform reduces investigation times from hours to minutes and eliminates between 95 and 99 percent of false positives in production environments. Fortune 500 customers have reported cutting mean time to respond to security incidents from hours to minutes, with some organizations achieving seven-minute response times.
The customer base includes major companies across finance, retail, technology, and healthcare sectors, including DXC Technology, which deployed the 7AI solution across its largest agent-driven security operation within eight weeks.
Organizations utilizing the platform have reallocated Level 1 and Level 2 analysts from alert triage duties to focus on threat hunting and strategic security initiatives, fundamentally transforming how security teams prioritize their work.
7AI's technology represents what industry participants term an "agentic security inflection point," where AI agents handle investigative work while security teams focus on strategic and proactive defense activities.
Unlike traditional security approaches that add more staff and detection tools to handle increasing threat volumes, the platform automates repetitive investigation work while maintaining investigative accuracy and consistency.
The funding will expand 7AI's AI Security Engineering and go-to-market teams as the company scales through a channel-first business model. The company is also preparing to deepen collaborations with federal agency partners in 2026.
"7AI is the clear leader in agentic security," Shah stated.
"Fortune 500 customers are experiencing measurable results at scale within weeks of adopting the solution." Adam Fletcher, Chief Security Officer at Blackstone, described the platform as "fundamentally reimagining how security operations function at scale" and highlighted the team's commitment to product innovation and execution quality.
Lior Div emphasized the company's approach to growth, noting that 7AI prioritized proving its technology at scale before expanding its team and operations.
"Most companies do it backwards. They raise huge rounds, scale fast, then hope the technology catches up. We inverted that," Div explained.
The financing reflects growing investor confidence in AI-driven security solutions as organizations confront workforce pressures and data volumes that traditional security approaches cannot adequately manage.
The round's magnitude underscores the industry's recognition that autonomous agents represent a transformative approach to security operations management.
