Google announced on Thursday that the company has begun to take a more active approach to keeping malware out of the Android Market. The search giant is using a new service called “Bouncer” to search through the Market for potential malware. Bouncer will scan new applications, ones already in the Market, and developer accounts for known malware, spyware, trojans and misbehaving apps. The service has been running for some time and between the first and second halves of 2011, the company reports a 40% decrease in the number of potentially-malicious downloads from the Android Market. The drop comes as security companies have been reporting that instances of malicious applications are on the rise. Google also said Android is designed to prevent