Objective-See: RansomWhere?
objective-see.org
Let's try to generically thwart OS X ransomware via math! By continually monitoring the file-system for the creation of encrypted files by suspicious processes, RansomWhere? aims to protect your personal files, generically stopping ransomware in its tracks.
As with any security tool, it is important to understand the tool's limitations. RansomWhere? was designed to generically stop OS X ransomware. However several design choices were consciously made (to facilitate reliability, simplicity, and speed) that may impact its protection capabilities. First, it is important to understand that the protections afforded by any security tool, if specifically targeted, can be bypassed. That is to say, if new piece of OS X ransomware was designed to specifically bypass RansomWhere? it would likely succeed.