Harness Design on CyberSecurity Elitehttps://cybersecurityelite.com/tags/harness-design/Recent content in Harness Design on CyberSecurity EliteCyberSecurity Elitehttps://cybersecurityelite.com/images/og-default.pnghttps://cybersecurityelite.com/images/og-default.pngHugoen-usMon, 08 Jun 2026 18:55:51 +0200GPN CTF 2026 — LLM Harness Post-Mortem: Where Claude Code Got It Right (and Wrong)https://cybersecurityelite.com/ctf-writeups/gpn-ctf-2026-llm-harness-postmortem/Sun, 07 Jun 2026 19:58:00 +0000https://cybersecurityelite.com/ctf-writeups/gpn-ctf-2026-llm-harness-postmortem/GPN CTF 2026 Meta: the Claude Code harness behind 19 writeups — sub-agent parallelism, scratch-dir caching, six wasted hours on the wrong NTRU framing, and the corrective rules I'd port to any future CTF.