Abnormal Security Reaches $5.1 Billion Valuation with New Funding Round

The cybersecurity startup secures $250 million in Series D funding, aiming for further growth and potential IPO.

Abnormal Security specializes in AI-driven email and collaboration app security to prevent social engineering attacks.
The company has seen rapid growth, achieving over $200 million in annual recurring revenue and serving more than 2,400 customers.
Key investors in the latest funding round include Wellington Management, Greylock Partners, and CrowdStrike Falcon Fund.
Co-founders Evan Reiser and Sanjay Jeyakumar previously sold TellApart to Twitter before pivoting to cybersecurity.
The company is expanding its workforce and leadership team, positioning itself for a potential IPO.