March 25, 2021

Patching alone is not enough: Investigate your exposure windows

Security Operations

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

Threat Research

March 17, 2021

MTR in Real-Time: Exchange ProxyLogon Edition

Security Operations

March 15, 2021

DearCry ransomware attacks exploit Exchange server vulnerabilities

Perhaps not by coincidence, the ransomware's file encryption methodology mimics that of WannaCry.

SophosLabs UncutThreat Research

March 12, 2021

DearCry ransomware: what it is and how to stop it

Products & Services

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

March 08, 2021

Protecting Sophos customers from HAFNIUM

Sophos customers are protected from the exploitation of the new zero-day vulnerabilities affecting Microsoft Exchange.

Products & Services

March 05, 2021

HAFNIUM: Advice about the new nation-state attack

Products & Services