Software Updates & Patching

Software updates fix security holes that criminals actively use to break into phones and computers. Once a fix is released, attackers study it and target people who haven’t updated. Turning on automatic updates is one of the easiest, most effective security steps there is.

• Everyone
• Small businesses

What to keep updated

• Phone operating system (iOS or Android)
• Computer operating system (Windows, macOS, ChromeOS)
• Web browsers (Chrome, Edge, Safari, Firefox)
• Apps, especially banking, email, messaging and work apps
• Home router and Wi-Fi equipment. See Home Wi-Fi
• Smart devices: cameras, doorbells, TVs
• Security software built into or installed on your computer

Turn on automatic updates

• Turn on automatic updates in your phone and computer settings, and in each app store.
• Restart when prompted. Many updates only finish after a restart.
• Keep enough storage space free so updates can install.
• For work devices, follow your company’s update schedule and don’t postpone critical updates.

Fake update warnings

Criminals use fake “Your browser is out of date” or “Install this update” pop-ups on websites to trick people into installing malware. Real updates come from your device’s settings or official app store, not from a web page or an email link. See Tech Support Scams.

End-of-life devices

When a phone, computer or router stops getting security updates, new holes never get fixed. Check whether your device still gets updates. If not:

• Plan to replace it, especially if you use it for banking or work.
• Don’t use it for sensitive accounts in the meantime.
• Wipe it before selling or recycling it.

Antivirus and built-in protection

Modern Windows and Mac computers include built-in malware protection; keep it on and updated. Avoid “free” security tools from pop-ups or unknown websites. Phones are best protected by updates and installing apps only from official app stores. See Smartphone Security.

Last updated: October 2, 2026