Microsoft fixes Classic Outlook bug causing email delivery issues

Published on April 6, 2026

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

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Iran-Linked Password-Spraying Campaign Targets 300+ Israeli Microsoft 365 Organizations

April 6, 2026
An Iran-nexus threat actor is suspected to be behind a password-spraying campaign targeting Microsoft 365 environments in Israel and the U.A.E. amid ongoing conflict in the Middle East.The activity, assessed to be ongoing, was carried out in three distinct attack waves that took place on March 3, March 13, and March 23, 2026, per Check Point."The campaign is primarily

Disgruntled researcher leaks “BlueHammer” Windows zero-day exploit

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. [...]