Browser hardening lists can become endless. A short repeatable check is more useful: update the browser, remove old site permissions, inspect extensions and make sure dangerous-site warnings are on. Do not install an extra cleaner or disable normal features just to satisfy a checklist.
Run the check
- Open the browser's About or update screen and complete any pending update or restart. A browser that downloaded an update but was never restarted may still be running old code.
- Review extensions. Remove ones you no longer need; for retained extensions, inspect their site access and whether their publisher still maintains them. An icon you do not recognize deserves investigation before you sign into sensitive sites.
- Review site permissions for camera, microphone, location, pop-ups and notifications. Remove stale exceptions and prefer one-time permission when it is offered and sufficient.
- Confirm the browser's phishing and harmful-download protection is enabled. In Chrome, Settings → Privacy and security → Security shows Safe Browsing choices; understand the privacy tradeoff before choosing Enhanced.