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FBI Removing Web Shells From Infected Exchange Servers Twitter FBI headquarters in Washington (Photo: Tim Evanson via Flickr/CC) A federal court in Texas gave the FBI the go-ahead to remove malware from on-premises Microsoft Exchange servers at organizations infected in a wave of voluminous zero-day attacks earlier this year, the Department of Justice said on Tuesday. Since Friday, the FBI has been removing web shells, or scripts that allow remote access, from Exchange servers belonging to organizations in at least eight states, according to an unsealed application for a search warrant rele...

BankInfoSecurity May 5, 2021 Twitter Get Permission It has been an open question as to how a half-dozen hacking groups began exploiting Exchange servers in an automated fashion in the days leading up to Microsoft's patches. But there are strong signs that exploit code leaked, and the question now is: Who leaked it? A Taiwanese computer security researcher indicated on Friday that exploit code he developed and privately shared with Microsoft in early January ended up in hostile hands. It's an unsatisfactory prospect that how the Exchange exploit leak occurred may never be solved. But it ma...