Unbeknownst to Android developers, Google has been using a technology called “Bouncer” to screen all Android apps for several months. The tools scans app code after it has been submitted to the Android Market, but before it gets published in the app store. If it finds known malware or questionable behavior, it can either block the app or flag it for further review by Google personnel.
Google’s Hiroshi Lockheimer noted, “The interesting thing is that no one really noticed. It didn’t disrupt the end user’s experience [in the Android Market] or disrupt the developers. They didn’t have to think about it at all.”