Proofpoint

Max-severity Exchange server flaw under active exploitation by Kremlin hackers

Russian state hackers are actively using a serious flaw in Microsoft Exchange Server to attack computers. The flaw is rated maximum severity and lets attackers install backdoors and steal passwords. The hackers belong to a group called TA488, also known as Laundry Bear or Void Blizzard, which works for the Kremlin. Security researchers from Proofpoint and the NSA warned about these attacks last week.