The Capability Paradox: How Smarter Auditors Make Multi-Agent Systems Less Secure

In three linesStudy on multi-agent systems: 'semantic hijacking' attacks exploit agent confidence. Paradox identified: increasing Worker capability raises attack success rate from 18.4% to 63.9%. Mediation analysis reveals 'linguistic certainty' of stronger agents drives vulnerability. Proposed solution: heterogeneous ensemble verification reduces attack success rate to 2%.

Summary generated by Claude — human-verified