Mary leaves her Android phone in a Cab. John, the cab driver, is a nefarious character and tries to break into the phone versus returning it. He tries to install a custom version of Android on the device to gain access to Mary's data. What security principal would prevent this from instance?

Rollback protection prevents an attacker from downgrading the device's operating system to an older, potentially vulnerable version to exploit known weaknesses. If John tries to install a custom or older Android version, rollback protection would detect this and prevent the installation, ensuring the device's integrity. Factory Reset Protection (FRP) prevents unauthorized use after a factory reset but doesn't stop OS modification attempts. A work profile passcode protects data within the work profile but doesn't secure the entire device OS from tampering. Android Protected Confirmation ensures user intent for sensitive transactions but isn't relevant to preventing OS downgrades.