Malware doesn’t always have to attack your computer through browser- or OS-based exploits. Sometimes, it’s the social networks themselves that can be the problem. Researchers at Check Point have discovered that a variant of known ransomware, Locky, is taking advantage of flaws in the way Facebook and LinkedIn (among others) handle images in its bid to infect your PC. The trick forces your browser to download a maliciously coded image file that hijacks your system the moment you open it. If you do, your files are encrypted until you pay up.
While the actual Locky code is relatively pedestrian and easy to avoid if you’re aware (just don’t open the file), it’s the delivery mechanism that has analysts worried. Many security apps explicitly trust big social networks, and many people aren’t used to worrying about their downloads at sites like Facebook.


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