Signs of a hacker/crackers presence on a macbook pro?

[Bootsy Collins]

What I have recommended in the past is to enable MAC filtering on your wireless router. It gives you an added layer of security.

It really doesn't, though. Almost anyone equipped to break a WEP key can just as easily clone your MAC address, and may do it out of habit anyway just to hide their own tracks. edit:says he uses wpa2 key in OP. As long as he has a strong randomish pass, MAC filtering will only be a pain in the ass for him.

The MAC spoofing as I understood it negates the security of using MAC addresses via the router.

Yeah the router is secured with an administrator password (long and tough-jack the ripper would need years to crack it) and the wifi connections are secured with WPA-2 with a solid password. No passwords stored anywhere on any machine, ever.

I think whatever malware I came in contact with is either still present or has given someone an "in" that I can't fucking get rid of despite my best efforts.

Have you tried a cold reset?

Never heard of the term. Do yo mean resetting the router by pushing in the little button on the side or cutting the power to it? Or do you mean my laptop?

I believe it is by pushing the little button so that it resets the router to factory defaults. If you formatted your hard drive that should have wiped away the malware.