Ransomware attacks fall into two general categories – encrypting and non-encrypting. The first type encrypts files on your hard drive and forces you to pay to have them decrypted. The other type uses fairly simple techniques to restrict your access to files or applications, like locking you out of Windows, or keeping your Web browser from running. As with all threats, the purveyors of ransomware are hard at work developing new ways to evade your security with a range of advanced tactics, techniques and procedures.”]
Source: https://www.cuinfosecurity.com/blogs/new-twists-on-old-threats-p-2508