Device updates: make security a routine

Guidance reviewed on 11 November 2026.

A phone or browser can appear to work normally while still containing a known security weakness. Some updates repair vulnerabilities rather than visible performance problems. A functioning application is therefore not evidence that its current version is adequately protected. Official cybersecurity guidance recommends installing security fixes promptly.

Start with the operating system, then review the browser, email software, financial applications and extensions. Enable automatic updates where appropriate, but occasionally verify that installation actually succeeded. A restart may be necessary, and an older application session can remain open after a newer version has downloaded. Complete the vendor's update process rather than repeatedly dismissing its reminder.

Use device settings, the official application store or the manufacturer's independently located website. Do not install an attachment from an unexpected message or a supposed security update advertised by a random webpage. Criminals can imitate update notices and turn an apparently protective action into an installation of malicious software.

Maintain suitable backups of important files and check whether the device still receives security support. Once support ends, plan its replacement or reduce its use for sensitive activities. Updating cannot prevent every threat, but it closes known weaknesses and complements careful handling of links and downloads. For shared devices, agree on a convenient maintenance window so repeated postponements do not leave responsibility unclear.