Simbian vs Legion Security
Simbian
Simbian builds AI agents for security operations. Its AI SOC Agent investigates alerts around the clock, collects evidence on every observable linked to an alert, classifies true and false positives with severity and confidence ratings, and proposes response actions without pre-built playbooks. Companion agents cover threat hunting, penetration testing, network security operations, and GRC questionnaires. The platform deploys as SaaS or on premises and integrates with more than 100 security and enterprise tools.
Pros
- Offers both SaaS and on-premises deployment, which suits environments with data residency constraints (vendor documentation)
- Covers several SecOps functions beyond alert triage, including threat hunting and GRC work, per SecurityWeek's launch coverage
- Designed to integrate with existing tools such as CrowdStrike, Palo Alto, and Cisco rather than replace them (SecurityWeek)
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Legion Security
Legion Security helps enterprise security teams scale detection, investigation and response using agentic AI. The platform captures and learns from the real workflows analysts already use, and turns those actions into agentic playbooks the team can trust. The vendor positions this as a way to adopt frontier AI models gradually while keeping operational trust, reducing manual effort and preparing for autonomous security capabilities. It deploys through the analyst's browser rather than through API integrations, and uses vision models combined with other methods to observe how analysts investigate alerts, so the enterprise can either codify those processes or optimise them into visual agentic workflows that the team can inspect. Legion Security has offices in New York and Tel Aviv and is backed by Coatue, Accel and Picture, with investors from Island, CrowdStrike, Wiz and Google DeepMind. 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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