Case Study: Anthropic improves bug bounty vulnerability discovery with YesWeHack

Anthropic validates bug bounty findings with YesWeHack in 34 minutes

Anthropic tested their own agentic command-line tool, Claude Code, to determine its effectiveness in independently discovering and validating vulnerabilities during bug bounty hunting. The challenge was to assess whether the AI tool could handle the entire process from reconnaissance to producing a working proof of concept for real web application vulnerabilities without human intervention.

The solution implemented by YesWeHack involved a rigorous blind test of Claude Code against two vulnerability labs. While the tool excelled at reconnaissance, attack surface mapping, and identifying vulnerable code patterns, it struggled with the final step of exploitation and validation. YesWeHack demonstrated that Claude Code is best used as a powerful teammate for initial discovery, with human experts needed to manually confirm findings and build the final proof of concept, turning suspected vulnerabilities into valid bug bounty reports.

Anthropic