Anthropic posted one tweet. $15 billion in cybersecurity market cap was gone by end of day. Not from a product launch. From a research preview. CrowdStrike. Cloudflare. Palo Alto. Zscaler. All down. Same day. Same cause. The market just priced in what the industry has been avoiding — AI that finds vulnerabilities, writes the patch, and flags it for review. All in one session. That's not a feature update. That's an existential question for an entire sector. Some called it an overreaction. An 8% single-day drop in CrowdStrike said otherwise. This is what a capability shift looks like before the industry has time to respond. Save this. The security stack is being repriced in real time. [Anthropic Claude Code, cybersecurity stocks, AI security, AppSec disruption, Claude Code security, market crash AI] #Anthropic #ClaudeCode #Cybersecurity #AIDisruption #CrowdStrike