US consumer credit reporting agency Experian also appears to have been affected. Based on the initial post, which did not contain any technical information, some believed the company might have been hit by ransomware, but it later turned out that the problems were caused by the McAfee update. McAfee informed users on Wednesday that they might be prevented from logging in to their Windows devices after they installed version 9418 of Exploit Prevention on Endpoint Security 10.2 and earlier.Įndpoint Security 10.2 reached end of life in December 2018, but some organizations still appear to be using it and it has caused problems for their employees after they installed the Exploit Prevention update.īritish electricity distribution network operator UK Power Networks appears to have been impacted by the issue, according to a post on Reddit. An update released recently by McAfee for one of its products is preventing Windows users from logging on to their systems, and some major organizations appear to have been affected.
