Disgruntled researcher leaks “BlueHammer” Windows zero-day exploit

Published on April 6, 2026

Exploit code has been released for an unpatched Windows privilege escalation flaw reported privately to Microsoft, allowing attackers to gain SYSTEM or elevated administrator permissions. [...]

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Microsoft fixes Classic Outlook bug causing email delivery issues

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Microsoft has resolved a known issue that was preventing some Classic Outlook users from sending emails via Outlook.com. [...]

New GPUBreach attack enables system takeover via GPU rowhammer

April 6, 2026
A new attack, dubbed GPUBreach, can induce Rowhammer bit-flips on GPU GDDR6 memories to escalate privileges and lead to a full system compromise. [...]