Don’t run JS email attachments: ​they​ can carry potent ransomware

Attackers are infecting computers with a new ransomware program called RAA that’s written entirely in JavaScript and locks users’ files by using strong encryption.

Most malware programs for Windows are written in compiled programming languages like C or C++ and take the form of portable executable files such as .exe or .dll. Others use command-line scripting such as Windows batch or PowerShell.

It’s rare to see client-side malware written in Web-based languages such as JavaScript, which are primarily intended to be interpreted by browsers. Yet the Windows Script Host, a service built into Windows, can natively execute .js and other scripting files out of the box.

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Story added 14. June 2016, content source with full text you can find at link above.