Microsoft has given a clear ultimatum to organizations still using the shared .onmicrosoft.com sending address: migrate to a verified custom domain or expect severe outbound throttling that will constrain external email to just 100 external recipients per organization in any 24‑hour rolling...
There's a new twist in the ongoing saga of cybersecurity missteps—this time involving Microsoft Entra ID. A recent discovery has revealed that unprivileged users are now able to update their own User Principal Names (UPNs), a feature that was traditionally reserved for administrators. For...
