I have a rather serious question regarding hacking. I wasn't sure if I should pm or post, but I wasn't sure who to pm either

andy maybe?
is tfs associated with hostnoc.net in any way? I did a little checking up and it seems they are spam-friendly.. There were several frequent intrusion attempts on my PC whose whois.arin lead back to hostnoc. These intrusion attempts were mostly portscans and ICC tagdata overflow..
in my security logs though, it first said some of these IPs were associated with TFS but arin leads back to hostnoc?
I'm not sure if its just my computer that was compromised or if TFS was that led to TFS appearing in my intrusion detection logs..
anyone else have this problem? anyone who can help with this dilemma?
(icc tagdata overflow was associated with hostnoc while portscan from tfs was associated with sita.net..)