Legion Security vs 7AI
Legion Security
Legion Security offers an agentic AI security operations platform that deploys through the analyst's browser rather than through API integrations. The system observes analyst investigations, playbooks and past cases in a learning mode, then executes workflows in the browser with human oversight (companion mode) or with reduced intervention (autonomous mode). Press coverage describes it as a browser extension AI SOC companion that works across tools such as Chrome, Edge and Island. The company was founded in 2024 by former Microsoft Sentinel team members and emerged from stealth in July 2025.
Pros
- Raised $38M total: an $8M seed led by Picture Capital and Accel, and a $30M Series A led by Coatue (Calcalist, Fortune)
- Founding team includes former members of Microsoft's Sentinel product, per Calcalist
- Browser-based deployment is designed to avoid custom API integration work, per the company
- Customers cited on the vendor site report outcomes such as an 81% reduction in MTTI/R (WELL Health Technologies, vendor-cited)
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7AI
7AI is an agentic security platform that assigns SOC work to specialized AI agents, including a Detection agent for alert triage, an Investigations agent for enrichment and correlation, a Response agent for containment actions, and Hunting and Cases agents. It was founded in 2024 by Lior Div and Yonatan Striem-Amit, who previously co-founded Cybereason, and launched from stealth in February 2025. The platform is cloud based and connects to existing security tools across endpoint, identity, cloud, email, and network domains through API integrations.
Pros
- Founding team previously co-founded Cybereason (SecurityWeek)
- Raised a $36M seed and a $130M Series A led by Index Ventures with Blackstone participation within roughly two years of founding (SecurityWeek)
- A DXC Technology CISO reported an 80 percent reduction in tier 1 analyst time (vendor-published testimonial)
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