@Frederick:
@theroflcoptr:
I don't think you understand how modern ransomware works. It encrypts files on your hard drive. Closing or "cleaning" the browser window doesn't fix that.
There are MANY different kinds of Ransomware.. the method I gave will get rid of all of them.Â
What you are referring to is something called Cryptoware, which goes beyond not just demanding a ransom, but actually tries to encrypt vital files on your hard drive. Cryptoware is a type of ROOTKIT which you only get if you install something accidentally.
Two of the most common ways of being tricked into installing rootkits:
1. You get prompted to get malware removal software to fix one problem.. when in fact, that software is actually a rootkit!Â
DO NOT INSTALL SOFTWARE THAT IS OFFERED TO YOU. Only install software that YOU went looking for.
2. You get a notice to upgrade your java software.Â
Again.. DO NOT INSTALL SOFTWARE SUGGESTED FOR YOU.  If you get the idea to upgrade your java or whatever, go directly to adobe dot com or java dot com and get the REAL upgrade.. not some fake malware disguised as those sites.
Rootkits are extremely rare, not easy to get, and damned near impossible to get rid of. I spent 6 months trying to get rid of a rootkit once.. and succeeded.
I wouldn't worry about a rootkit.. such as cryptoware.
Ransomware is fairly common and easy to get stuck with though.
You never know when you'll be hacked.. >:D