Prepared with AI assistance. Practical examples are illustrative, not hands-on test results. The featured image is an AI-generated editorial illustration of generic equipment, not an exact branded product photograph.
Quick answer: Keep only extensions you actively use, review their permissions and publisher, and remove any that can read more data than their purpose requires.
Extensions live inside a sensitive part of your work environment. Convenience should be balanced against access to pages, passwords and browsing data.
What matters most
- Review every installed extension
- Limit permissions
- Check publisher changes
- Use built-in browser features first
A practical step-by-step approach
1. List extensions
Open the extension page in every browser profile you use.
2. Remove unused items
Delete duplicates, abandoned tools and anything you do not recognize.
3. Inspect permissions
Question access to all websites, clipboard, downloads or browsing history.
4. Check updates and ownership
Review recent update notes and whether the developer changed.
5. Repeat quarterly
Schedule a short recurring audit.
Try it in practice
Review permissions before installation
For a simple timer, question a request to read and change data on every website. Check the publisher, needed permissions and your employer’s policy. Remove extensions you no longer use and verify whether browser synchronisation reinstalls them elsewhere.
Illustrative exercise, not a measured test result.
What to check before you decide
Compare extensions by necessity, permissions, update history, publisher reputation and availability of safer alternatives.
- Clear purpose
- Minimal permission
- Active maintenance
- Trusted publisher
- Easy removal
Common mistakes to avoid
- Installing from recommendation lists blindly
- Ignoring permissions after updates
- Using many overlapping blockers
- Leaving extensions in unused profiles
A question worth asking
Do many positive reviews prove an extension is safe?
No. Reviews are one signal, not a security guarantee. Consider its permissions, maintenance and whether the task can be done without an extension.
Your next step
Treat extensions like installed software. A smaller set of trusted, maintained tools reduces both distraction and risk.
Further reading
For additional guidance and context, consult CISA: Secure Our World. Check how the guidance applies to your organisation, country and specific task.