Beginning this past Friday, I have had enormous problems with Internet connection speed. I had Bitdefender Plus installed; I have scanned the computer with that, Malwarbytes and even run ComboFix, but found no infection on the computer. The seems to be with something either downloading or uploading from my computer - none of the other computers on the network seem to be affected. In a three hour period on Monday, our network downloaded more than 10GB of data - though none of us were downloading anything at all. While I'm writing this, I'm running MalwareBytes again, just it in case some new profile gets picked up.
Any suggestions on how I should proceed?
Thanks for your help!