Help, I've been hacked!

[Angry_squirrel]

I've just logged on to facebook and browsed My account > account security, and it turns out there are people who've been logging into my facebook from unknown devices (I only ever use it when at home, on my own computer).

As you might imagine, this worried me. So I got my mother to check the same thing on her account. The same person has been logging into her account. We use different computers. I don't pretend to know a lot about computers, but the fact that it's not just my computer that's been hacked seems like a big deal.
I recently changed my password and secret question for both my facebook and email address on a whim, but this person has logged into my account both before, and after this. Again, I don't know a lot about computers, but to me this suggests someone has a keylogger on my computer.

I reckon I could remove it from my computer by restoring it to factory settings, then changing all my passwords, and changing my IP. But my mother is unwilling to restore her computer to factory settings.

So my question is this: How do I stop it?

 

[DannyJBeckett]

First thing's first. Take it to a professional. Go to your nearest Computer Store (I noticed you're English like me, so it'll probably be a PC Ideas) and explain the situation to them, and they'll tell you what can be done about it.

Secondly, get a new email account on a different service provider, change ALL your passwords, security questions, etc., and just generally take whatever measures you feel necessary to be more secure (check your FaceBook and go to "Account Settings > Account Security" and tick the box that reads Browse FaceBook on a secure connection (https) whenever possible).

Hope this helps.

 

[mad825]

Define "unknown devices".

Try activating Login approvals and/or Login notifications via Account security and that should prevent any further "unknown" devices from reoccurring however make sure that isn't you,check to see if the login times do not match your own records.

It's rather strange for you and your mother to be affect if they were separate workstations. Perhaps there are people around you who is capable of this?

 

[Zantos]

It's rather strange for you and your mother to be affect if they were separate workstations. Perhaps there are people around you who is capable of this?

I overlooked this when I read through but you're right, that's definitely quite strange.

If there's a wireless router involved, make sure that it's secure. Slightly older ones were shipped with very predictable access codes, or the access code even written on them. If someone's guessed your router password, or just read it off through a window, then it could explain why both computers have been accessed.

I've only skimmed this but it looks good http://compnetworking.about.com/od/routers/ss/routerpassword.htm

As for the current problem of having the keylogger, take it to a professional is always the best idea.