If you aren't familiar with what ransomware is, it is basically a type of virus that locks you out of your system until you pay the perpetrator a sum of money. Now, unless you are running a relatively valuable business, or  downloading sketchy torrents from some .ru domain, you have nothing to worry about, but it's interesting nonetheless. Linux has commonly boasted "no viruses" as a selling point, but with more and more users, comes more and more malicious intent as this article demonstrates.