Armadin Raises $255.5M Series B at More Than $2.5B Valuation

By ·October 1, 2026·3 min read
Armadin Raises $255.5M Series B at More Than $2.5B Valuation

Armadin has raised $255.5 million in a Series B round co-led by Andreessen Horowitz and Accel, valuing the cybersecurity company at more than $2.5 billion. Bain Capital Ventures and Redpoint joined the financing, which brings total funding to $445 million.

Led by Mandiant founder Kevin Mandia, Armadin uses autonomous AI agents to simulate attacks against organizations. The company says the capital will support research, training and commercial expansion as large enterprises seek faster ways to test their defenses.

This report is based on Armadin’s October 1 announcement distributed by PR Newswire. Follow the source link for the original release and full context.

Source: PR Newswire

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