Safer Browsers: Extensions, Updates, Settings
Keep your browser safer by updating quickly, limiting extensions to what you trust and need, and avoiding risky settings that weaken phishing and download protection.
Browsers are a high-risk surface because they process untrusted internet content and often store sensitive data (cookies, saved passwords and session tokens). This guide translates UK government browser security advice into user-friendly steps for everyday browsing and shopping, including extension hygiene and update habits. It targets UK consumers and home workers who rely on browser-based banking, shopping and email.
Quick checklist
- Install browser security updates as soon as they are available.
- Minimise extensions; install only what you need and trust.
- Do not disable safe browsing, download checks, or sandboxing.
- Use the NCSC browser check to confirm your browser is up to date.
Why browser security matters
Browsers face high exposure to malicious content and phishing. They handle untrusted websites, execute scripts, and store credentials and session data. A compromised or outdated browser can expose your passwords, banking sessions, and personal data.
Update discipline
GOV.UK browser guidance states that security updates must be installed quickly because browsers' exposure is high. Enable automatic updates where possible and restart the browser when prompted. Do not postpone updates for long; they often fix critical security flaws.
Extension and plugin hygiene
GOV.UK warns that plugins and extensions can access page content and increase exposure. Extensions may read or alter pages across tabs. Install only what you need, from trusted sources (official stores). Regularly review and remove extensions you no longer use.
Built-in protections you should not disable
- Safe browsing warnings: Browsers flag known phishing and malicious sites. Keep this feature on.
- Download reputation checks: Some browsers scan downloads before saving. Do not disable this.
- Sandboxing: Browsers isolate tab processes. Avoid settings that weaken isolation.
Passwords, autofill and cloud sync
Browser password managers can be convenient but introduce risk if the device is shared or compromised. On your own trusted device, it can be safe—but avoid saving passwords on shared or unmanaged devices. Understand how your browser stores credentials (often encrypted with your OS account). For higher security, consider a dedicated password manager.
Quick self-check
Use the NCSC browser check to confirm whether your browser needs an update. The tool identifies outdated browsers and provides guidance.
Frequently asked questions
- How often should I update my browser?
- As soon as security updates are available; browsers need fast patching because their exposure is high.
- Are browser extensions risky?
- They can be—extensions may access pages and data across tabs, so install only what you need and trust.
- Is it safe to let my browser save passwords?
- It can be on your own trusted device, but avoid doing so on shared or unmanaged devices and understand how credentials are protected.