@spider703/2, do you mean that account spider703 was used by you and hacker at the same time?

Even if so and you are not the person which was spreading the malware on the forum, however you were obliged to delete his topics after your account was unlocked.

I don't know what decision administration will take, but responsibility for access to the account lies with forum users themselves, and you for three months didn't bother to put in order your message history.