New Android Feature Adds Protection to Your USB Port with Enhanced Security Settings

Android 16 introduces enhanced security by blocking new USB connections when the phone is locked. This feature is designed to defend against physical attacks, as it disables USB data signaling until the device is unlocked. In addition to this measure, other security enhancements are on the horizon, such as restrictions on app sideloading, which aim to bolster overall device protection. For years, security experts have advised on the importance of keeping our phones secure while charging in public spaces.

However, many of us brushed off these warnings, opting to use any available charger without a second thought. Now, Android 16 aims to change that narrative by promoting safe charging practices. The new feature works through an Advanced Protection Mode, which blocks the connection of USB peripherals, such as keyboards and flash drives, when the device is locked. Although charging remains functional, any attempt to connect new USB devices will be blocked until the phone is unlocked.

This proactive measure is akin to a “USB condom,” a term often used informally to describe methods of safeguarding against USB-based threats. Android 16’s USB protection builds on a software approach that Google first implemented with Android 12, which was further enhanced in Android 15’s lockdown mode. The distinctive improvement in Android 16 is the automatic blocking of new USB connections without any user intervention. Users will receive notifications if there is any ‘suspicious USB activity’ while the phone is locked.

Other security improvements in Android 16 include the disabling of app sideloading, limiting 2G connectivity, enforcing Memory Tagging Extension (MTE) for apps, and prohibiting public Wi-Fi connections. While a user-friendly toggle for these settings has not yet been introduced, they are already functional in the Android 16 Beta 4 version. Once Advanced Protection Mode is available to everyone, it will encourage all users to adopt safer charging habits. Rest assured, you can charge your device without the worry of unwanted incursions from malicious USB devices.