I regularly need to clean infections from my (old and new) customers machines, but I got a call from a regular customer about a problem on her laptop. I have not yet seen her machine but am due to see her this morning.
She has a 3 year old Windows 7 machine on which I recently changed the Internet Security software ( I am a Reseller for Eset. The machine formerly had McAfee).
The machine only uses one login name as there is no-one else in the house who uses the machine.
Yesterday she called to say that there were two new usernames on the login screen made up of random letters and numbers. I know she would not have created these users herself.
Has this happened to anyone else? Is there a cause other than malware infection? How to clean up?
As mentioned I will be going to see the machine in about an hour and may well have more detail then. But any guidance before that would be grately appreciated.