Abnormal Security
“Can a behavioral AI platform become the de facto autonomous security operations layer for enterprise cloud identities and email, displacing both SEGs and human SOC analysts?”
Founded2018
HQSan Francisco, CA, USA
FoundersEvan Reiser, Sanjay Jeyakumar
Total raised$546M
Latest roundSeries D, 2023
Valuation$5.1B post-money (2023)
IndustryInfrastructure / KYC
The story
Founded in 2018 as an AI-driven email security company targeting business email compromise, Abnormal Security expanded from inbound email protection to a broader cloud identity and SaaS security platform by 2023. The company's embedded finance angle is limited to being a customer of HR/workforce infrastructure tools such as Firstbase (for onboarding equipment). By 2025, rebranding as Abnormal AI signals a push toward autonomous AI security operations beyond just email, competing with SIEM and SOC automation vendors.
Last 12 months
Product timeline
2018
Founded as an AI-based email security platform focused on stopping business email compromise (BEC) and phishing attacks.· pivot
2020
Raised Series B led by Menlo Ventures; expanded platform capabilities for socially engineered email attack detection.· banking
2022
Raised $210M Series C at $4B valuation; achieved unicorn status; expanded to cover account takeover (ATO) protection.· pivot
2023
Raised $250M Series D at $5.1B valuation; surpassed $200M in annual recurring revenue; launched cloud platform integrations covering SaaS account takeover across 350+ cloud apps.· pivot
2025
Rebranded product suite under 'Abnormal AI' positioning; expanded to autonomous AI security operations vision and launched AI Security Mailbox and AI Phishing Coach products.· pivot
The stack
Accounting gap: none