I had always used Bitdefender as my primary anti-virus, however upon hearing 360 included both Bitdefender and Avira engines, I decided I would give it a try.

Ignore the bad advertising given by them apparently "cheating" in antivirus tests. At the worst it was a dumb move rather than fraudulent; but a simple switch after install turns on one and/or the other.

Once it is installed, install this add-on and get instant protection for the sites you visit, including a "shopping mode" which turns on automatically when you visit shopping sites. This actually acts more like a hardened/verbose version of the antivirus, automatically notifying you of ANYTHING suspicious while the mode is switched on. But besides that, it stays largely hidden, with just a tick on the add-on icon if the website is deemed safe. No bloat like McCaffee or other similar programs.

Note that it doesn't do anything on its own; you need one of their (free) antivirus programs for it to connect to . I'd recommend the 360 Total Security Essentials version, just because I don't feel there's anything in the full version that is good enough to choose over other software. Once that improves I might change my mind ;)

I had this same problem, however I uninstalled 360 totally and then reinstalled it from their website. I then installed the FF add-on from the 360 website and it went in flawlessly.. The strange thing is that the revision level went backward (from 1005 to 1004) when I installed the plug in from the 360 website however the update date went forward to July 25 2017 (today) . Hmmm

Complete protection is paramount with online activity.

Cool.

Nice job

Very good

Very easy to get along with this program...

User hk
4 Engine is a really good basis.
viruses and internet is becoming much more dangerous than 20 years before. But in this old time most people was to unserios in handling with computer -may today same (a lot of new technik egg smartphones tabletts...)- every medium must be av-checked, downloads too.......
here 360 helps very much in an easy way, and checking all files (archives too -without limites....)....
performens keeps -in my opinion- very good, i'm using an old system............
thank you 360

Thank you for the sharing this security extention.