While there aren't nearly as many malicious applications aimed at Android devices as there are targeting Windows, that's no reason to be complacent. If one of those malware apps hits your phone, you've got trouble whether it's common or not. AV-Test Institute rated 31 Android security applications and found that for the most part they're even more effective than when last tested.
AV-Test CEO Andreas Marx observed that "the malware protection rate of all products—with one exception (51.2 percent)—was in the very good range with an average detection rate of 97.6 percent." He also noted that the current crop of products generated far fewer false positives (valid files detected as malware), with a total of seven compared with 36 in the previous test.
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