I hope you're not holding your breath ]:D
Did not have to hold it long. I just got a response from the webmaster accusing me of spamming the forum from my IP address. This is my personal computer with its own public ip. Nobody else has access to the internet through this IP. This computer is protected with Norton Antivirus and checked regularly. I have NEVER spammed this forum.
Besides, in a few minutes, I can sign in again from the same IP. I think it is faulty forum software causing this problem, not my computer or spam. Now I am being insulted too? :(
Not sure how serious you are but...
I'm a well trained it'er working for a company that takes security very seriously. So I take all possible precautions I know of and the ones I am instructed to do and my company even checks that I follow the instructions.
Does this mean my pc is not hacked? Well as it is extremely hard to verify whether a system has been hacked or not I do not dare to say :"My system has not been hacked". but I do hope it isn't.
The only thing that is needed to infect a system is a small "sender" on your system that calls daddy hacker to say your system is hacked. As the hacker responds on the request send from your computer the firewall will not stop this communication.
I followed trainings where coding techniques have been explained that are so simple and scary you don't talk about it in public.
So yes it is possible to make a (for PC norms) small self changing virus (code and name) that makes a system a slave for a master that can go unnoticed for years. Main production country is a country that came alive after world world 2 and is quite regularly in the news.
In short :"anti virus software only finds the software it knows of, can find and wants to find"
As a hacker there are 3 things you can do with a hacked system.
1) Use it for direct profit. FI install blocker and ask money to unblock.
2) Use it for indirect profit: FI Get paid to post spam on a forum.
3) Don't use it. For instance: Put it in wait until you decide what to do.
In the first case you have to make yourself visible and anti virussoftware will catch up and probably find a way to delete it.
In the second case the software may run for years unseen.
Sorry for the bad news