The following Sofotware are best for as a anti virus, Please check these sofoware.
1. NoD 32
2. Avast anti virus:
4. Microsoft defender.
I hope you will check these softwares on the google.
Never lie someone Who trust on you.
Never Trust Someone who lies you.
Regards & Thanks
My best opnion that the Avira anti virus is very competable with window 8.
You can download avira anti virus free ware from the athentic web site on the google.
After some days you will see some message from them that either buy them or remove them from your PC.
The best free Antivirus according to me is