Amph
ok, I understand, but how could he manage to delete my security software (bitdefender), obviously he hacked my computer and then deleted this programme....
There is a lot of criminal energy involved to achieve this...well like in any other robbery of course.
But longterm this could kill the Bitcoin. If in a case like this, you cannot mark your coins as stolen to block them for further usage at least, not even talking about tracing the coins to the new "owner".
if he controlling your pc at kernel level, you are screwed, he can do basically everything with your machine, the only option now is to secure erase
next time i would suggest to keep a small amount in your client that is running on your main machine(like 0.01 btc), all your other funds in a different wallet(cold storage, no internet connection)
if your 0.01 vanishes one day, you know you are infected, and you can clean your machine with a minimal loss, it's the best strategy against those malicious guy