Recently my antivirus has been constantly detecting threats and it's always tmp files. I delete maybe 50 of these files each day. A few days ago it detected a trojan. Last week it detected many '.json' files from AppData/Local/Google/Chrome/User Data/Default/Extensions.
I scanned with Avira, Bitdefender, Malwarebytes, CCleaner and tdsskiller today. The scans have only detected tmp files. I d/l many torrents recently, d/l java and used it in internet explorer, and I once enabled javascript on a shady site.
I tried googling the problem, but I haven't found too much info specific to my situation. I disabled the search and indexing services.
Could it be an attack similar to the one explained here?
how can an attacker use a fake temp file to compromise a program?
Edit:
I have Adblock, BeelineReader, Ghostery, Google Cast, Google Dictionary, HTTPs Everywhere, Lastpass, Password Alert, Session Buddy, WOT, and StayFocused. But I've had all these for months. I deleted all my browsers cache / everything in the temp folder using CCleaner and rebooted many times.