Legion Security vs Prophet Security
Legion Security
Legion Security helps enterprise security teams scale detection, investigation and response using agentic AI. The platform learns from the real workflows security teams already run, across the SOC and beyond, and turns that institutional knowledge into agentic playbooks the team can trust and audit. This lets organisations adopt frontier AI models gradually while preserving operational trust, cutting manual effort and building toward autonomous security capabilities. Rather than depending on API integrations, Legion combines vision models with other methods to observe how practitioners actually work, so teams can codify those processes as they are or optimise them into transparent, inspectable agentic workflows, extending the same approach beyond the SOC to security operations across the enterprise. 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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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)
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