Samsung’s Auto Blocker is getting a major security upgrade in One UI 9

Auto Blocker on One UI helps keep you safe from security threats, suspicious activity, and privacy risk by blocking some common attack vectors. Samsung has been improving the user experience for Auto Blocker, with One UI 8.5 adding the ability for Auto Blocker to re-enable itself after 30 minutes of being turned off. With One UI 9, Auto Blocker is getting new features, including a security report and complete USB connection blocking in Maximum restrictions mode.

In the recently released One UI 9 beta 1 for the Galaxy S26 series, Samsung has added a new Security Report section to Auto Blocker. This report presents the history of Auto Blocker “blocking apps with unknown sources,” presumably from installing apps on your device.

The report shows app instances over the last seven days, while the Month tab presents the data graphically.

When Auto Blocker is enabled, only apps from authorized sources such as the Google Play Store and the Galaxy Store can be installed. Samsung says this helps prevent the installation of malicious apps. Android also has a similar setting, “Install unknown apps,” in Settings > Apps > Special access, which lets you allowlist individual apps other than the Play Store and Galaxy Store to install apps from. This setting is also present on Galaxy devices, so Samsung’s settings are a duplicate and add another layer of friction, though One UI 9’s report section should provide more value.

Beyond the report section, One UI 9 also blocks USB connections completely in Maximum restrictions.

On One UI 8.5, the standard Auto Blocker setting blocks commands sent over USB connections, while Maximum restrictions has no further protections on USB connections.

Both the security report and the blocking of USB connections in Maximum restrictions mode are live in the One UI 9 beta. The features should ideally be included in the One UI 9 stable release as well.

Thanks, Dylan H., for the tip!