AI summary: A GitHub user has tricked cybersecurity researchers by publishing fake proofs-of-concept (PoCs) containing Linux backdoors. The user copied legitimate PoCs for known vulnerabilities and reposted them with hidden malware. The malicious PoCs have since been removed, but the incident highlights the need for cybersecurity professionals to exercise caution and preparedness when testing for vulnerabilities. The incident also underscores the challenges repositories face in preventing this type of phishing, as even when a fake PoC overlaps with a legitimate one, it can be difficult to take action.