IP spoofing?

[nocc1506]

I have wireless router at home. Apparently Internet session was commnced and connection never closed. 4 days later someone other than me (as no one was at home) using my IP address from start of session posted or blogged in attempt to look like me. 2 wire wireless router/ATT and network is supposed to b secure and code needed from bottom of router. Anyone have any info/ideas on this?

[wimiadmin]

Are you sure your wireless was hacked and not your computer?

[nocc1506]

att says ip address was mine, yet no one physically present.

[wimiadmin]

Do they have the MAC address of the computer that was connected via your IP? Then compare that MAC to your computers or others in the same house on the same network and see if it belongs to one of them. If not, your wireless was hacked....most likely. If it does match then your computer was hacked.