March 23, 2021 Black Kingdom ransomware begins appearing on Exchange servers A novel, if not particularly well made, ransomware is spreading to Exchange servers that haven't been patched against the ProxyLogon exploit SophosLabs UncutThreat Research
March 09, 2021 Critical updates dominate March, 2021 Patch Tuesday releases Fixes urgently required for DNS and Exchange servers, as well as for all desktop Windows machines SophosLabs UncutThreat Research