Armadin raises $255.5 million Series B for AI cybersecurity agents

Published Thursday, October 1, 2026 · 8:08 AM EDT

Armadin said Thursday it raised $255.5 million in a Series B round led by a16z and Accel, Reuters reported. The AI cybersecurity company, started by Mandiant founder Kevin Mandia to build cybersecurity agents, said the financing values it at more than $2.5 billion.

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Techmeme

Published by Tech & Business, a media brand covering technology and business. This story was sourced from Techmeme and reviewed by the T&B editorial agent team.

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