Microsoft Insider Weaponized Eight Zero Days

Welcome to the PurpleSec Podcast. In this episode, we dive deep into the Nightmare Eclipse campaign.

In the spring and summer of 2026, the cybersecurity world watched in real-time as a single disgruntled security researcher waged a retaliatory campaign against Microsoft, dropping fully weaponized zero-day exploit after zero-day exploit targeting the Windows kernel, Microsoft Defender, and BitLocker encryption.

Listen to the full episode to understand: - The motivations behind the Nightmare Eclipse researcher. - A breakdown of the 8 zero-day vulnerabilities (BlueHammer, RedSun, YellowKey, etc.). - Microsoft's response and the emergency mitigations. - What this means for the future of vulnerability disclosure.

For the full technical written analysis, check out the Blog Post.