Developer Catches Deepfake Job Interviewer Using Three-Finger Test, Blocks GitHub Malware Plot

A developer thwarted a sophisticated recruitment fraud attempt after exposing a fake video interviewer by performing a simple hand-occlusion test—a method that exploits a long-known weakness in deepfake rendering technology. During what appeared to be a legitimate job interview conducted via video call, the interviewer was asked to hold up three fingers in front of their face. The gesture revealed visual glitching characteristic of AI-generated video synthesis, confirming the interviewer was a deepfake. The scam was part of a larger targeting scheme in which threat actors pose as recruiters offering remote positions, then direct victims to clone and execute malicious GitHub repositories disguised as technical assessments.