Tag: exchange server

Microsoft Patch Tuesday fixes 13 critical flaws, including 4 under active attack

July 16, 2021

The latest Patch Tuesday brings a new batch of security updates addressing a total of 117 vulnerabilities. The second Tuesday of the month is here, which means that Microsoft has rolled out patches for security vulnerabilities in Windows and its other products as part of its monthly Patch Tuesday bundle. This month’s batch of security updates brings … More Microsoft Patch Tuesday fixes 13 critical flaws, including 4 under active attack

Authorities remove web shells from compromised Exchange servers

April 15, 2021

Law enforcement steps in to thwart attacks leveraging the recently-disclosed Microsoft Exchange Server vulnerabilities. The United States’ Federal Bureau of Investigation (FBI) has carried out a court-approved operation to “copy and remove” malicious web shells from hundreds of systems across the US that were compromised through the mass exploitation of zero-day flaws in Microsoft Exchange … More Authorities remove web shells from compromised Exchange servers

Exchange servers under siege from at least 10 APT groups

March 11, 2021

ESET Research has found LuckyMouse, Tick, Winnti Group, and Calypso, among others, are likely using the recent Microsoft Exchange vulnerabilities to compromise email servers all around the world. ESET Research has discovered that more than ten different advanced persistent threat (APT) groups are exploiting the recent Microsoft Exchange vulnerabilities to compromise email servers. ESET has … More Exchange servers under siege from at least 10 APT groups