After about two months investigation and with the help of 3 separate helpers on G2G (thanks fellas,) it's finally become apparent that my PCs are been infected with malware (some known, some unknown) a) through straightforward hacking and b) through vulnerabilities within automatic software updates.
To overcome the hacking I've installed a hardware firewall but I still had a port-scanning attack today which I suspect must have originated from malware in my PC.
I'm also becoming increasingly aware that my PCs are being infected, straight after they've been rebuilt through vulnerabilities in the automatic software update process.
A piece of software was (wisely?) written to expose this flaw and is dubbed EvilGrade. Here's an article :
EDIT: scroll down 2 posts for the correct URL.
I can say more on my reasoning but I'm fairly sure that this software, or something like it, is being used against me.
It can't affect MS updates which are digitally signed.
Has anyone else had experience of this malware ?
How are my update requests being intercepted ?
Do I just have to run without updates until the suppliers catch up to MS ?
Do you have anything else to add ?