Using a few other side channels, the team was able to accurately track what a user was doing in real-time. The researchers then monitor the changes in this shared memory and are able to correlate changes to various activities - such as logging into Gmail, H&R Block, or taking a picture of a cheque to deposit it online via Chase Bank - the three apps that were most vulnerable to the attack, with a success rate of 82 to 92 percent. Once installed, the researchers can use it to access the shared memory statistics of any process, which doesn't require any special privileges. To demonstrate the method of attack, first a user must download an app that appears benign, such as a wallpaper, but actually contains malicious code. Protect your Android device from malware.Android now scans apps for malware after installation.Android still triggers the most mobile malware, says F-Secure.
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