TL;DR
Browser exploits are a major threat. While keeping your browser updated is vital, it’s not enough. This guide shows you how to harden your browser security with extensions, settings tweaks, safe browsing habits and more.
1. Keep Your Browser Updated (But It’s Not Enough)
We start here because it’s the most basic step. Updates patch known vulnerabilities. But attackers are always finding new ones, so rely on these other steps too.
2. Use a Good Ad Blocker and Script Blocker
Malvertising (malicious ads) is a common way to deliver exploits. Script blockers stop potentially harmful code from running in your browser.
- Ad Blockers: uBlock Origin is highly recommended – it’s lightweight and effective.
- Script Blockers: NoScript (for Firefox) or ScriptSafe (for Chrome/Edge) block JavaScript by default, letting you allow scripts on trusted sites only. This requires more configuration but significantly improves security.
3. Browser Extensions – Choose Wisely
Extensions can add functionality, but they also pose a risk. Malicious extensions are common.
- Only install extensions from official stores: Chrome Web Store, Firefox Add-ons, etc.
- Check permissions carefully: Does the extension *really* need access to all your browsing data?
- Regularly review installed extensions: Remove any you don’t use or no longer trust.
4. Enable Enhanced Security Features
Modern browsers have built-in security features – make sure they’re enabled.
- Chrome/Edge:
- Enhanced Safe Browsing: Settings > Privacy and security > Enhanced safe browsing. Choose ‘Standard protection’ or ‘Extended protection’.
- Site Isolation: Settings > Privacy and security > Security > Site isolation (if available).
- Firefox:
- Enhanced Tracking Protection: Options > Privacy & Security. Set to ‘Strict’.
- Total Cookie Protection: Options > Privacy & Security > Cookies and Site Data. Enable it.
5. Configure Browser Settings for Better Security
Adjust these settings to reduce your attack surface.
- Disable third-party cookies: This limits tracking and reduces the risk of cross-site scripting attacks. (Settings > Privacy and security > Cookies and site data).
- Clear browsing data regularly: History, cache, cookies – a clean browser is a safer browser.
- Disable plugins you don’t need: Flash Player is notorious for vulnerabilities (and should be disabled if still present).
6. Safe Browsing Habits
Your behaviour matters!
- Be wary of suspicious links: Don’t click on links in emails or messages from unknown senders.
- Verify website URLs: Check for typos or subtle changes to legitimate addresses.
- Use strong passwords and a password manager: Avoid reusing passwords across multiple sites.
- Enable two-factor authentication (2FA) wherever possible: Adds an extra layer of security.
7. Consider a More Secure Browser
Some browsers prioritize security more than others.
- Brave Browser: Built-in ad blocker and tracker protection.
- Tor Browser: Focuses on anonymity and privacy (but can be slower).
8. Regularly Scan for Malware
Malware can compromise your browser security.
- Use a reputable antivirus program and keep it updated.
- Run regular scans to detect and remove any threats.