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

Russian state hackers are using a maximum-severity vulnerability in Microsoft Outlook’s Exchange Server to backdoor unpatched machines and steal credentials and other confidential information from them, security researchers said Thursday. The attacks are coming from TA488, a tracking name for a group working on behalf of the Kremlin, Proofpoint researchers said Thursday . Proofpoint and the National Security Agency jointly warned last week that the group, also tracked as Laundry Bear and Void Bl