I tried putting and using Ad-aware on Windows10 over the weekend, WOW, Windows 10 didn't like it and quickly did system restore, and all happy. It is funny how you go from one version all happy and new version it is crippled.
Does anyone make something you can put into cloud and then run security scans without putting into your PC?
HitmanPro 3 is the best on demand scanner that I've found:-
http://www.surfright.nl/en/hitmanpro/intronew
From the site: "HitmanPro is a signature-less on-demand malware scanner of just 10 MB and does not need to be installed. It can be started directly from an USB Flash Drive, CD/DVD, or network attached storage. This is particularly useful in case of a ransomware infection or in situations where malware is manipulating the installed antivirus software and its updates."
Use HitmanPro alongside a couple of other malware scanners such as those listed on the site linked by userque. Malwarebytes anti-malware (free) and EmsiSoft Emergency Kit are good free options. I use a few others too. There is one called herdProtect that uses 68 anti-malware engines in the cloud (although ironically it will still miss malware that others find):-
https://www.herdprotect.com/
The fool-proof defence against malware is making regular backups and then disconnecting the storage medium from your machine or network. Crypto ransomware can even reach your flash USB drive, Dropbox folders or machines connected via your network, so you want to keep some storage disconnected as a last form of defence. Of course there are other reasons for making regular backups to always attached external drives such as convenience, flexibility, etc but I am referring to a situation where files have been encrypted by a variation of ransomware and you have to revert back to a prior snapshot. Backups made to
attached network storage may not be a meaningful defence against ransomware.
With respect of ransomware, the company that offers HitmanPro 3 also has a product called HitmanPro Alert that claims to prevent ransomware by monitoring behavior (as opposed to referring to a signature list of known malware threats):-
http://www.surfright.nl/en/alert
I use and recommend HitmanPro Alert.
For surfing, sandboxing using a product like Sandboxie will keep you safe if you want to visit the shadier reaches of the web...
"Sandboxie uses isolation technology to separate programs from your underlying operating system preventing unwanted changes from happening to your personal data, programs and applications that rest safely on your hard drive...block malicious software, viruses, ransom-ware and zero day threats by
isolating such attacks in the Sandbox; leaving your system protected"
http://www.sandboxie.com/