Email security firm Abnormal Security announced on Tuesday that it has raised $250 million in a Series D funding round at a valuation of $5.1 billion.
The company was valued at $4 billion in 2022 when it raised $210 million in a Series C funding round.
The latest funding, which brings the total investment in the company to $546 million, was led by Wellington Management, with participation from Greylock Partners, Menlo Ventures, Insight Partners and CrowdStrike Falcon Fund.
Abnormal has developed what it describes as an AI-native human behavior security platform designed to detect and block attacks targeting email accounts and popular SaaS applications, such as Microsoft 365, Google Workspace, Slack, Salesforce, ServiceNow, Workday, and Zoom.
The capabilities provided by Abnormal include inbound email security, account takeover protection, and security posture management for email, SaaS applications and cloud infrastructure.
The company claims to have surpassed $200 million in annual recurring revenue in only five years. More than 2,400 organizations allegedly use Abnormal solutions, including 17% of the Fortune 500 companies.
“We are relentless in fulfilling our mission of protecting humans with AI, and we’ve earned the trust of our customers by providing the best product in human behavior security,” said Evan Reiser, CEO and co-founder of Abnormal Security. “This funding allows us to further invest in our human behavior AI platform to protect more people across their everyday applications, while enabling customers to accelerate their AI initiatives with autonomous AI solutions.”
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