[biosiams]

BitDefender Total Security.... I just use a 90 days trial and re-activate it when it's about to expire.
All you have to do is just create a new account with a new email (can use throwaway emails) and "switch account" within the "My Account" setting to get back the full 90 days.

I honestly just use it for the firewall, to determine whether or not an application should have internet access quickly and easily(quite useful when downloading certain things).
The ransomware protection is also welcome these days. Though I'm sure someone could figure out a way to bypass it.