Legion Security vs Prophet Security
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)
Pricing:
Prophet Security
Prophet Security builds an agentic AI SOC platform whose main component, Prophet AI SOC Analyst, autonomously triages, investigates and responds to security alerts, alongside an AI Threat Hunter and an AI Detection Advisor aligned to MITRE ATT&CK. The platform shows its full reasoning, investigation plans, queries and evidence for each investigation. It deploys by taking read-only API access to existing tools such as SIEM, identity providers, cloud platforms and EDR, and returns results in an investigation workbench. The company was co-founded by Kamal Shah and Vibhav Sreekanti, whose prior company StackRox was acquired by Red Hat.
Pros
- Raised a $30M Series A led by Accel with participation from Bain Capital Ventures, following an $11M seed led by Bain Capital Ventures (Pulse2, Help Net Security)
- Founders' prior company StackRox was acquired by Red Hat (company blog)
- Company reports over 1 million investigations conducted and 360,000 analyst hours saved in a six-month period (Pulse2, company-reported)
- Docker is a named customer with an executive quote in funding coverage (Pulse2)
Pricing: