Google is making a change to its Android security systems on Thursday that is meant to ensure that users who install apps from outside of the Google Play store are a bit safer from malicious apps. Currently, Android users can have Google scan their apps for malicious code at the time of installation. Going forward, Google will expand this program with a more service-based system that will continuously check the device to make sure that apps are “behaving in a safe manner, even after installation.” This means that as Google learns more about mobile malware, it can now check for this kind of code even after you’ve installed an app. Until now, once a malicious app had made it through Google’s security systems, there was no way to detect it later. The new continuous checks use the same app-scanning technology Google already uses on Android and in its Chrome browser.