Stop Letting Your Browser Spy on You: 5 Privacy Settings to Change Now

Introduction

Most people treat their web browser as a neutral tool, but it’s anything but. By default, browsers like Chrome, Edge, Firefox, and Safari are designed to collect information about your browsing habits, location, device, and even how you move your mouse. Much of this data gets sold to advertisers or used to build a profile of you. This isn’t a secret—browser makers disclose it in lengthy privacy policies most people never read.

The good news is that you can dial back most of this tracking with a few simple changes. You don’t need to be a tech expert to make your browser considerably less nosy.

What’s happening

Recently, PCWorld published an article titled “Your browser is too nosy. Change these 5 settings now,” which walked readers through the most impactful privacy adjustments. The article highlighted how many browsers come with data-sharing features turned on by default—things like third-party cookies, location services, and permission requests for hardware like your camera or microphone. The piece resonated because it addressed a common frustration: feeling watched online.

These are not hypothetical risks. In 2025, researchers from the University of Washington and Mozilla both published reports showing that browser fingerprinting – a technique that identifies you based on your unique browser configuration – is used by over 10% of the top 10,000 websites. And third-party cookies remain the backbone of behavioral advertising, despite browser-level blocking initiatives.

Why it matters

When your browser shares data unnecessarily, you lose control over your personal information. Advertisers can follow you across sites, build detailed profiles of your interests and habits, and even infer sensitive details like health conditions or political leanings. That data can be sold to data brokers, leaked in breaches, or used for targeted scams.

Beyond privacy, there’s a security angle. Every piece of data you allow a site to access – location, microphone, camera – is a potential attack surface. If a malicious site gets permission to use your camera, it could spy on you. If your browser reports your exact location, it could be used by stalkers or trackers.

The good news: you can reduce most of these risks without disabling important browser features.

What you can do: 5 settings to change right now

These steps take about five minutes total. Open your browser’s settings menu and follow along. If you use more than one browser, repeat them for each.

1. Block third-party cookies and cross-site tracking

  • Chrome: Settings → Privacy and security → Third-party cookies → Block third-party cookies.
  • Firefox: Settings → Privacy & Security → Enhanced Tracking Protection → Strict (or Custom, selecting cookies).
  • Edge: Settings → Cookies and site permissions → Manage and delete cookies and site data → Block third-party cookies.
  • Safari: Preferences → Privacy → Prevent cross-site tracking (already on by default in recent versions).

This stops advertisers from following you across different websites. Some sites may break (e.g., single sign-on logins), but most work fine.

2. Turn off location sharing

  • Chrome / Edge: Settings → Privacy and security → Site settings → Location → Don’t allow sites to see your location.
  • Firefox: Settings → Privacy & Security → Permissions → Location → Settings → Block new requests asking to access your location.
  • Safari: Preferences → Websites → Location → Deny without asking.

Only turn location on temporarily if you need it (e.g., maps).

3. Block or reduce fingerprinting

Browser fingerprinting is harder to stop with built-in settings alone.

  • Firefox: Enable “Resist Fingerprinting” by going to about:config and setting privacy.resistFingerprinting to true. This is advanced and may cause some sites to behave oddly.
  • Brave: Fingerprinting protection is on by default.
  • Chrome / Edge: No native option. Use an extension like Privacy Badger (from the Electronic Frontier Foundation) or uBlock Origin in advanced mode with third-party scripts blocked.

Firefox and Brave offer the strongest built-in protection here.

4. Restrict camera, microphone, and notification permissions

  • Chrome / Edge: Settings → Privacy and security → Site settings → Camera / Microphone / Notifications → Set to “Don’t allow” or “Ask (default)”.
  • Firefox: Settings → Privacy & Security → Permissions → Uncheck “Warn you when websites try to install add-ons” but for camera/mic, choose “Block new requests.”
  • Safari: Preferences → Websites → Camera and Microphone → Deny.

Set these to “Ask” if you use video calls, but deny by default is safer.

5. Use private browsing – but know its limits

Private browsing (Incognito in Chrome, InPrivate in Edge, Private Window in Firefox) does not make you anonymous to websites or your internet provider. It only prevents your browser from storing history, cookies, and form data locally. However, it can be useful for one-off searches or logging into accounts on shared computers.

For stronger privacy, regularly clear your cookies and cache (Settings → Privacy and security → Clear browsing data) and consider a privacy-focused browser like Firefox with strict settings or Brave.

A quick note on trade-offs

Some of these changes will break certain website features. For example, blocking third-party cookies can prevent you from logging into some sites via Google or Facebook. You can always toggle settings back temporarily. The trade-off is worth the privacy gain for most users.

Sources

  • PCWorld. “Your browser is too nosy. Change these 5 settings now.” Published June 11, 2026.
  • Mozilla. “Firefox Fingerprinting Protection.” Developer documentation, accessed July 2025.
  • University of Washington. “Browser Fingerprinting: A Survey.” 2025 research paper.
  • Electronic Frontier Foundation. “Privacy Badger.” https://privacybadger.org