Revision History

Samsung is rolling out a sweeping suite of security features across its Galaxy lineup in early 2026, including an automatic inactivity restart that reboots idle phones after 72 hours, a hardware-level Privacy Display that blocks shoulder surfers on the Galaxy S26 Ultra, and Knox Enhanced Encrypted Protection (KEEP) to safeguard on-device AI data. Together with expanded theft protection in One UI 8.5 and post-quantum cryptography, the updates represent Samsung's most ambitious security push in years—and a growing industry consensus that the smartphone itself, not just the cloud, is the new front line of digital defense.