Researcher Drops BigDiskBuster ZeroDay PoC That Blocks Microsoft Defender Updates

A zeroday proofofconcept tool that stops Microsoft Defender from installing platform and signature updates by filling all available disk space was published on GitHub on September 19 The tool called BigDiskBuster has no patch no CVE and no Microsoft advisory Its author Abdelhamid Naceri is a former Microsoft security researcher whose earlier Defender exploits were used in