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What is Anthropic’s Claude Code Security and how does it work - why did cybersecurity stocks fall after the launch?

Anthropic’s Claude Code Security: On February 23, 2026, shares of major cybersecurity companies plunged as much as 11% in a single trading session after the launch of Claude Code Security by Anthropic ...

OpenAI Launches Full-Scale Effort to Patch Open-Source Bugs as It Takes on Anthropic’s Mythos

Amid concerns about AI models’ cybersecurity capabilities, OpenAI revealed an improved version of GPT-5.5-Cyber and its “Patch the Planet” initiative to fix open-source software bugs.
Opinion

Chainguard's new Athena coalition uses AI to fix open-source flaws - before attackers exploit them

Chainguard will use AI to protect open-source code. Athena pools open-source users, developers, and maintainers. Others are also using AI to secure open-source code. As Chainguard puts it, "The gap ...