Coming in at No. 3, the SNDApps malware family, which made up 12 percent of the total Android malware threats Trend Micro found, dates back to 2011 and was originally found in a group of apps in the official Google Play store. The apps contain spyware that upload personal information, such as email addresses, phone numbers and other details and to a remote server without the user's permission. The simple apps that spread the spyware included an air horn, which sounded when an icon was touched, and a whoopee cushion. Google took action to block the apps from its official repository, but they are still available on third-party app stores.