While Pokemon GO, the hugely popular augmented reality game, is officially only available for mobile devices, there are ways to play it on PC (we have a guide for it here). But going down the unofficial route does come with its own risks. If you download the game from a dubious source, you may potentially fall prey to nefarious software created by cybercriminals. One example is a new ransomware that impersonates a Pokemon GO application for Windows. Here's what you need to know.