Stop letting your browser spy on you: 5 settings to change now

If you’ve ever searched for a product on one site and then seen ads for it everywhere else, your browser is the conduit. By default, most browsers share a surprising amount of information with websites and advertisers: your approximate location, browsing history, interests, and even hardware details. A recent article from PCWorld highlighted just how nosy browsers have become and outlined five simple changes that can drastically reduce unwanted tracking.

What happened

PCWorld published a practical guide titled “Your browser is too nosy. Change these 5 settings now” (June 2026), which points out that the default configurations of Chrome, Firefox, Edge, and Safari all leak data that advertisers and trackers exploit. The article notes that while browser makers have added privacy features over the past few years, most users never dig into the settings menus to enable them. As a result, the typical browsing session generates a detailed profile of your behavior—often without your explicit consent.

Why it matters

Online tracking isn’t just about irrelevant ads. The same data that serves you shoe ads can also be combined with other sources to build a surprisingly accurate picture of your health, finances, and political leanings. Data brokers purchase this information and resell it, sometimes to employers or insurers. While it’s nearly impossible to achieve total anonymity online, adjusting a few browser settings can stop the most aggressive tracking methods and prevent third parties from accessing sensitive device features without your knowledge. These changes take only a few minutes and require no technical expertise.

What readers can do

Below are the five settings from the PCWorld guide, adapted with the most common paths for Chrome, Firefox, Edge, and Safari. (Note: menu names may vary slightly depending on your browser version.)

1. Turn off third-party cookies and enable tracking protection

Third-party cookies are the primary tool advertisers use to follow you across different websites. Every browser now has a built-in way to block them.

  • Chrome / Edge: Go to Settings > Privacy and security > Cookies and other site data. Choose “Block third-party cookies” or the option that blocks tracking cookies (Chrome calls it “Block third-party cookies in Incognito” by default). In Edge, enable “Tracking prevention” to Balanced or Strict.
  • Firefox: Settings > Privacy & Security > Enhanced Tracking Protection. Choose “Strict” for the strongest coverage.
  • Safari: Safari > Preferences > Privacy. Check “Prevent cross-site tracking.” Safari blocks third-party cookies by default, but verify this setting.

2. Disable ad personalization and interest-based ads

Many browsers share a unique advertising identifier with ad networks, allowing them to serve you targeted ads based on your browsing history. You can reset or disable this ID.

  • Chrome: Settings > Privacy and security > Ad privacy. Disable “Ad topics,” “Site-suggested ads,” and “Ad measurement.”
  • Edge: Settings > Privacy, search, and services > Personalization & advertising. Turn off “Allow Microsoft to use your browsing activity for personalized ads.”
  • Firefox does not use a dedicated ad ID, but you can go to Settings > Privacy & Security > Do Not Track and enable it (see Setting 4).
  • Safari: Safari > Preferences > Privacy. Disable “Allow websites to check for Apple Pay” if you don’t use it, and uncheck “Allow privacy-preserving measurement of ad clicks” if you want to limit ad performance tracking.

3. Block automatic access to location, camera, and microphone

Most browsers will ask permission to use these features once, but they often remember your choice and allow automatic access. Setting them to “ask” or “block” by default is safer.

  • Chrome / Edge: Settings > Privacy and security > Site Settings. Under Permissions, set Location, Camera, and Microphone to “Don’t allow sites to access” or “Ask before accessing.” You can also review the list of sites that already have permission and remove them.
  • Firefox: Settings > Privacy & Security > Permissions. Click “Settings” next to Location, Camera, and Microphone, and uncheck any sites you no longer trust. Set the default to “Block new requests.”
  • Safari: Safari > Preferences > Websites. For Location, Camera, and Microphone, choose “Deny” for new sites. You can also browse the list on the left to remove specific site permissions.

4. Enable Do Not Track and Global Privacy Control

Do Not Track (DNT) is an older signal that most advertisers ignore, but its successor, Global Privacy Control (GPC), is legally binding in several jurisdictions (like California and the EU) and tells websites not to sell your data.

  • Chrome / Edge: Settings > Privacy and security > Ad privacy or Privacy, search, and services. Look for “Do Not Track” and turn it on. For GPC, you may need a browser extension (like Privacy Badger or the EFF’s extension) because Chrome doesn’t natively support GPC yet.
  • Firefox: Settings > Privacy & Security > Do Not Track. Choose “Always” to send the signal. Firefox also supports GPC by default in its private browsing mode (about:config flag privacy.globalprivacycontrol.enabled can be set to true for all windows).
  • Safari: Safari > Preferences > Privacy. Check “Prevent cross-site tracking” (which includes GPC signal). Safari does not have a separate Do Not Track toggle.

5. Use private browsing with enhanced protection

Private browsing (Incognito mode) doesn’t make you anonymous, but it prevents your browser from saving history and clears cookies after the session. For even better tracking protection, combine private mode with the settings above.

  • Chrome / Edge: Use Incognito (Ctrl+Shift+N) and ensure “Block third-party cookies” is enabled in Incognito (it often is by default). Edge’s “InPrivate” mode can be further hardened by enabling “Strict” tracking prevention in the main settings.
  • Firefox: Use a Private Window (Ctrl+Shift+P). In Settings > Privacy & Security > History, set Firefox to “Use custom settings” and check “Always use private browsing mode.” This forces every window into private mode.
  • Safari: Use a Private Window (File > New Private Window). Safari offers “Intelligent Tracking Prevention” which works across normal and private windows. No extra setting needed.

Conclusion

None of these changes will break websites, though a few might refuse to work if they rely on third-party cookies for essential login functions (in that case, you can whitelist specific sites). The whole process takes less than ten minutes. Once done, your browser will still function normally, but it will share far less about you with third parties. For a deeper dive, read the original PCWorld article linked in the sources below.

Sources

  • PCWorld (June 2026). “Your browser is too nosy. Change these 5 settings now.” (See Google News summary)
  • Additional setting locations verified against each browser’s official help pages as of June 2026. Note that browser menus are updated periodically; check your specific version if you cannot find a listed option.