580 California St., Suite 400
San Francisco, CA, 94104
Figure 3 – uploaded by Dr Dhananjay Dakhane
Figure 3 A user can turn the service on/off by going to "Settings," "Security," and then "Verify apps." When an app is being installed (Step 1), the service, if turned on, will be invoked (Step 2) to collect and send information about the app (e.g., the app name, size, SHA1 value, version, and the URL associated with it) as well as information about the device (e.g., the device ID and IP address) back to the Google cloud (Step 3). After that, the Google cloud will respond with a detection result (Step 4). If the app is not safe, the user is then shown a warning popup (Step 5) flagging the app as either dangerous or potentially dangerous. Dangerous apps are blocked from being installed, while potentially dangerous ones instead alert users and provide an option to either continue or abort the installation (Step 6) with a warning popup. Android 4.2 scans side loaded apps: While apps on Google Play are checked for malware, apps that are side loaded (installed from elsewhere) were not checked for malware. On Android 4.2, when you first try to sideload an app, you’ ll be asked whether you want to verify side loaded apps are safe. This ensures that all apps on your device are checked for malware.
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