Cont.Federal authorities in the U.S. have swooped in to eliminate malicious backdoor code planted by attackers on vulnerable Microsoft Exchange servers across the country. In a news release published Tuesday, the U.S. Department of Justice announced the court-authorized effort to copy and remove web shells that had been installed on on-premises versions of Microsoft Exchange Server software. Web shells are malicious pieces of code that give attackers continuous remote administrative access to a compromised system.
No doubt the fact that this malware attack is suspected of being a state sponsored one (China...) has prompted such a reaction from the US authorities.