>>>> installed Semantec instead...
>>>>Overkill. Windows 10 includes WIndows Defender. It does pretty much the same thing as third party AV tools.
>>
>>https://www.av-test.org/en/antivirus/home-windows/windows-10/
>>
>>Scroll to the bottom to see where Windows Defender is ranked. Symantec (Norton) scored 100%.
>
>I would never trust tests where Norton scores 100%

Yes that sounds a bit fishy for sure. There is this floating around now too...
http://www.darkreading.com/endpoint/known-security-flaw-found-in-more-antivirus-products/d/d-id/1323480?_mc=RSS_DR_EDT