Personally I feel that the free version is sufficient. If it has found all that many objects I would do as the program suggests. You can alway reinstate them. In any case you should always have a back up available in ACRONIS or something similar. What firewall and AV are you using? There is now way that my ESET security suite would allow all that lot to slip by.
Sniper Elite 4 review: Headshotting Nazis has never felt so good