New Archestra's OpenAPPA Saturates Two Major Security Benchmarks with a 0% Attack Success Rate

Archestra released OpenAPPA, an open-source security engine designed to stop data exfiltration caused by prompt injection or model hallucination. The team reports zero successful attacks when running security benchmarks Bench-Corp (20 multi-step enterprise workflows) and AgentThreatBench, versus 10% for Claude Code’s auto mode and 31% for Microsoft FIDES.