Someone's stolen my email account
I woke up this morning to find that someone has stolen my Yahoo and Gmail accounts. By using the alternative email address in Gmail I was able to reset my password and all is OK - for now. That someone has changed my personal details for Yahoo so I'm really in it now. I sent a message to them but all I got was an automated reply.
I do leave my laptop on standby all night and wonder if anyone could get in that way. I use AVG 8 and windows firewall to hopefully stop any hackers.
This is the 2nd time this has happened in 3 months. Any help would be gratefully accepted