Hi guys, this is my first post but this is probably not going to get resolved on this thread. I want to explain a situation that i am in and it is unbelievably infuriating and disturbing.

Basically i have a cyberstalker except he is stalking a friend of mine in response to anything i do online that may provoke him. He/they have been doing this for 12 months, i have spent a considerable amount of money on security and got the authorities involved and this person is still able to trace my activities. It appears to have started from a virus to a hotmail account a long time ago and i signed upto yahoo, gmail etc they all got compromised one by one, then persnal mails started getting sent out so i closed everything down and havent used webmail since. Anyway its now moved onto a new level in the last few months and im really stuck as to what to do.

First let me describe my system, i have windows xp SP2, a linksys firewall, sygate software firewall, a suite of anti-spyware, hijackthis detector etc, ghostsurf, nod32 antivirus and so forth...i run scans daily, occasionally some minor malware appears but everything apart from what i can tell is squeaky clean..

I actually thought this guy was somehow remotely intercepting traffic between my machine and my ISP or a machine somewhere in the line but i've removed this theory based on a few events.

First up, i >did< format my machine in frustration a while back which 1) annoyed the authorities so i've not been able to do it again and 2) it apparently pissed him off which means it is something local to my machine and he had to rehack my machine.

Whatever this thing is it is 1) able to see what websites i have visited, 2) detect what mails have arrived in my pop3 account on this machine and so forth.

He seems to have a pretty good read on anything going on so assumed he might be logging in via remote desktop and so forth, anyway i have shut down all non-critical services, i am using pix prempt preview software to harden my system aswell.

Anyway whatever i do he seems to detect it reasonably quickly and email horrible mails to my friend within a day - he also doesn't seem to be able to tell the content of the mails in the sense that i could write rubbish and he thinks its something else. He makes the assumption about some of the content. This again was proved when i sent a very harmless mail from my work place to home email address with 2 words in it as a test and he took the bait and used it. This proved that he somehow can read or has access to my mails coming to this machine.

I've no idea what this could be but the authorities describe it as very sophisticated, it has avoided all detection systems i've tried and i am completely stuck as to what else i can try to see if there is any more unusual behaviour going on.

What i want to know is does anybody know of stuff - no specifics required that can essentially do what i am describing above? They appear to be able to circumvent all my firewalls with no problems and nothing seems to be sent off the machine that shouldnt be so i can only assume he is using a common port like 80 if thats possible? Question is how is he monitoring and sending back or is he just hooked in and monitoring remotely? If thats the case, why can everything i have no detect this intrusion?

Any help or advice would be greatly appreciated as ive run out of ideas and ive probably done more than the average persont o stop this from happening.