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AI CURATED HOT STORY · 10/15/2026

Google and CMU Propose Harmony Harness: Multi-Objective Evolution Boosts Agent Security Retention to 55%

1 reports archived1 independent sourcesupdated 10/15/2026, 22:11:52
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Google and Carnegie Mellon University introduced Harmony Harness, a multi-objective evolution framework that prevents security degradation in self-improving agents during task migration. By optimizing test pass rates and exploit blocking as separate goals and distinguishing general fixes from benchmark-specific patches, the system achieved a 55% retention of security gains on unseen crash types in SecRepoBench, compared to 0% for traditional single-objective baselines.

LATEST/Google and Carnegie Mellon University introduced Harmony Harness, a multi-objective evolution framework that prevents security degradation in self-improving agents during task migration. By optimizing test pass rates and exploit blocking as separate goals and distinguishing general fixes from benchmark-specific patches, the system achieved a 55% retention of security gains on unseen crash types in SecRepoBench, compared to 0% for traditional single-objective baselines.

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TIMELINECoverage timeline

Total 1 reports · Latest first
  1. Rohan Paul (@rohanpaul_ai)T2·78 pts
    • Traditional self-improving agents chasing single metrics (e.g., test pass rate) lose nearly all security gains on new tasks.
    • Harmony Harness employs parallel multi-version evolution to balance functionality and defense, decoupling general fixes from specific patches.
    • Experiments show a 66.7% success rate in fixing and blocking exploits on unseen crash types, with a 55% retention of security gains.
Google and CMU Propose Harmony Harness: Multi-Objective Evolution Boosts Agent Security Retention to 55% | Today for AI