ResearchResearch paperSafety & Alignment1 source · Oct 16, 2026

HardEval: An Execution-Verified Benchmark for AI-Driven Security Hardening and Compliance Remediation

In this paper, we introduce HardEval, an execution-verified benchmark for evaluating language-model-assisted security hardening.

Key points

  • Implementing Security Technical Implementation Guide (STIG) controls remains a demanding operating-system administration task.
  • HardEval is built from Red Hat Enterprise Linux 8 STIG controls that fail on an unhardened baseline system.
  • The model produces a Bash script, which is executed on a live virtual machine and graded from fail to pass using the corresponding OpenSCAP/OVAL compliance check.
  • Evaluation of fourteen frontier and open-weight configurations reveals large and uneven capability differences across security domains.

Sources (1)

Extractive summary: sentences quoted from the sources.

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