➀ A developer created Defendnot, a tool exploiting an undocumented Windows Security Center API to disable Windows Defender by simulating third-party antivirus registration;
➁ The tool injects code into Windows Task Manager, leaving systems vulnerable as it mimics antivirus software without actual protection;
➂ Microsoft flagged Defendnot as a Trojan, warning of its potential misuse, while debates arise over user autonomy versus system security risks.