Quick Facts
Sublime Security has raised $150 million in a Series C funding round led by Georgian, bringing its total funding to over $240 million.
The Washington, D.C.-based identity security startup builds AI-driven defense systems against phishing, spoofing, and business email compromise attacks.
Founded in 2019 by former U.S. Defense Department hacker Josh Kamdjou, the company leverages machine learning to automate real-time email threat detection.
Its platform features two key products: the Autonomous Security Analyst (ASA) and the Autonomous Detection Engineer (ADÉ), which automate triage and response.
Sublime Security’s enterprise customers include Spotify, Snowflake, Zscaler, and SentinelOne.
The company plans to use the new funding to expand globally, enhance AI model capabilities, and strengthen its autonomous threat-defense framework.
Georgian’s investment reflects growing confidence in AI-native security solutions tailored for post-LLM threat landscapes.
The round underscores a broader market shift toward autonomous cybersecurity systems that minimize human analyst workloads.