New free SW from Qihoo 360 http://www.360totalsecurity.com/en/tools/document-protector/ http://www.softpedia.com/get/System/Back-Up-and-Recovery/360-Document-Protector.shtml
It it only backing up files which are opened, edited or saved: It provides an built-in decryptor to rescue infected documents:
It has been updated to v1.0.0.1091 (May 27, 2017) (File Description of the Installer: 360 File Guard) No changelog... Blog-entry: Why you need 360 Document Protector
360 Document Protector v1.0.0.1151 (July 13, 2017) 360 Document Protector v1.0.0.1161 (July 21, 2017) Download No changelog...