If you’ve got a cell phone and frequently use an old scanner to digitally store documents and receipts, you’re missing out on a great opportunity. Smart phone cameras are great at scanning and saving those scraps of paper as pdf’s and it’s very convenient. However, a popular Pdf scanning app called CamScanner for Android devices has been caught sneaking malware onto customer phones and with over 100 million downloads, that’s a lot of people. The trojan, known as Necro.n, most likely snuck its way into the App under the guise of an advertising package and the developers of CamScanner may not have even been aware of the lurking, nasty code. However, users have noticed and posted a number of complaints in the reviews section of the Play store. Similar malware has been found in preinstalled on Chinese-made smartphones and the Necro.n trojan itself doesn’t actually perform any malicious activity on its own, such as spying on you or harvesting contact information. Rather, it’s simply a back door to your device, giving criminals access to your phone so they can do whatever dirty work they please.