(See also: Best internet security software 2015 UK.) You can download the free version from Bit Defender's website.
It offers an impressive feature set on Windows and Android, but less so for mac OS and i OS devices.
Know that you will most likely never even encounter most of these so-called threats, reality is that a computer can do just fine without any antivirus installed in the system unless you are some sleazy pervert who likes to surf a lot of adult streaming websites or risky websites to download cracks, patches, sql injections for hacking and what not.
All these high percentage malware and virus detection rate is a marketing gimmick to sell the software.
So i've just built a new computer and have installed kaspersky internet security, but when i try to do a database update it goes to 2% complete and doesn't go any further. Kaspersky is nowadays the best internet security software on the market. Even then, reality is Norton is just as good if not any superior to Kaspersky and quite honestly I would blindly trust Norton Security, Mc Afee, Trend Micro, F-Secure kind of more established organisation over some 3rd party so called internet security suit bullshit like Kaspersky, Avast, Eset or Bit Defender garbage etc.
I've tried looking for an answer, but i can't find one, so hopefully someone here knows what is happening? and yes, you shouldn't use two internet security software at the same time. I wouldn't advice you to use Norton or any free internet security software. And just for the record I have used both Norton and Kaspersky and this whole high resource utilization thing about Norton is an utter nonsense since I have hardly noticed any difference with the performance from start up to the running of multiple process smoothly.