CodeWall raises $4M pre-seed for autonomous attack agents

London-based CodeWall has emerged from stealth with $4 million in pre-seed funding led by Osney Capital, with InReach Ventures and Antler participating. The startup builds autonomous attack agents that probe enterprise systems from the outside without credentials, source code, or internal access.

• $4M pre-seed round led by Osney Capital, with InReach Ventures and Antler
• Agents operate externally without credentials, source code, or internal access
• Its agent gained access to McKinsey's Lilli production database in under two hours
• Funding will expand testable environments, verification, and London teams