An employee reports that after downloading a free game from a website, their corporate-issued Android phone now displays frequent pop-ups and shows unusually high cellular data usage. Company policy allows only apps from the official Play Store. To reduce the chance of this happening again, which setting should the support technician push to all managed devices?
Disable the "install unknown apps" permission on the device
Enable airplane mode when the device screen is off
Turn off automatic app updates in the Google Play Store
Malicious or unwanted programs are commonly distributed through unofficial app stores and direct-download sites. Disabling the "install unknown apps" (sometimes labeled "unknown sources") permission prevents users from sideloading APK files that do not come from the official Play Store, enforcing company policy and reducing the risk of installing compromised software. The other options do not address the source of the malware: turning off automatic Play Store updates still allows sideloading, a complex PIN protects only device access, and enabling airplane mode when the screen is off would merely block all radios rather than stop future installations.
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What are unknown apps or unknown sources on Android devices?
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Why is sideloading more risky than using apps from the Google Play Store?