Claude Mythos Preview surfaces 27-year-old OpenBSD crash bug

Hot take: this reads less like a product launch and more like proof that frontier coding models are crossing into serious vulnerability discovery territory.

• –The standout detail is the OpenBSD bug: a 27-year-old TCP SACK implementation issue that Anthropic says Mythos Preview could surface autonomously.
• –Anthropic is framing Mythos Preview as a defensive-only model inside Project Glasswing, not a public consumer launch.
• –The story’s credibility hinges on the security claim, not on model hype; the operational implication is faster zero-day discovery for both defenders and attackers.
• –I found no dedicated Product Hunt listing for Claude Mythos Preview, so PRODUCT_HUNT_URL is NONE.