You also want some good anti malware software and a 3rd party app for detecting ransomware etc, grindsoft is a good start, malwarebytes etc, it isnt just about the virus. you should also scan regular and stick to a reputable site like TeamOs, avoid other unknowm or common torrent sites too, in my time ive only ever had 1 ransomware attack, my fault, got an email as well demanding money to decrypt my files. I mailed the guy back and said id pay, if he was prepared to meet me in person face to face ha ha, needless to say i never heard from him again but did trace his IP etc and reported him. i did a wipe, reinstalled and that was that, after a fresh install i make a backup on a spare hdd and then put that hdd away for safe keeping in case its needed. im a photographer, thankfully i dont keep my work on the pc itself, i cant afford to lose my work.