We read with interest a brief article on the Robinson + Cole website that "a new version of the notorious and nasty ransomware Cryptowall, dubbed Cryptowall 4.0, has hit the scene."
Cryptowall 4.0 acts differently than its previous strategy of locking a computer entirely. It is able to change the names of specific files so you won't be able to find them on your drive.
The primary way that Cryptowall 4.0 infects a computer is through a zipfile with an attachment that looks like a resume, though presumably the file name could be different. So, be vigiliant about downloading files from emails, particularly from senders you don't recognize or in messages that look suspicious.
It will also be a good idea to back-up your data frequently.
