Obsidian Security, which helps companies secure AI agents, raised an $85M Series D at a $1.1B valuation, after raising a $90M Series C in April 2022 (Akash Sriram/Reuters)

<a href="https://www.reuters.com/technology/obsidian-security-raises-funding-11-billion-valuation-ai-security-demand-2026-08-04/"><img align="RIGHT" border="0" hspace="4" src="http://www.techmeme.com/260804/i21.jpg" vspace="4" /></a> <p><a href="https://www.techmeme.com/260804/p21#a260804p21" title="Techmeme permalink"><img height="12" src="http://www.techmeme.com/img/pml.png" style="border: none; padding: 0; margin: 0;" width="11" /></a> Akash Sriram / <a href="http://www.reuters.com/">Reuters</a>:<br /> <span style="font-size: 1.3em;"><b><a href="https://www.reuters.com/technology/obsidian-security-raises-funding-11-billion-valuation-ai-security-demand-2026-08-04/">Obsidian Security, which helps companies secure AI agents, raised an $85M Series D at a $1.1B valuation, after raising a $90M Series C in April 2022</a></b></span>&nbsp; &mdash;&nbsp; Obsidian Security said on Tuesday it had raised $85 million in a Series D funding round that valued the AI security startup at $1.1 billion &hellip; </p>