Firefox now blocks trackers with one simple trick

Firefox logo on colorful background
(Image credit: Mozilla)

Mozilla is rolling out Firefox version 102 which now has the ability to prevent websites from tracking you.

The full patch notes can be seen on Mozilla's page, which states Firefox will now mitigate “query parameter tracking when navigating sites…” Query parameters are the string of characters that appear in a URL after a question mark and can be used to track people across the internet. These parameters are used to display targeted ads, for example.

To illustrate how the new feature works, BleepingComputer created a test page where you can click on one of the links and see a URL that looks like this: “example.com/?mc_eid=12”. If you take that URL into the new Firefox browser, the characters after the question mark will be gone.

You can update Firefox by going to the browser menu and locating About Firefox to begin updating. To activate the anti-tracking feature, you’ll have to go to the Privacy & Security tab in Firefox Settings. Under Enhanced Tracking Protection, change the security level from Standard to Strict and you’re good to go.

Firefox displays a notice saying that browsing under Strict may cause some websites to not work properly. If this happens, you’ll have to revert back to Standard. It’s important to point out that the anti-tracking feature does not work on private windows, but it can be turned on. 

In a Firefox private window, enter "about:config" into the address bar, then type in “strip” in the new search bar. Set "privacy.query_stripping.enabled.pbmode" from false to true, and you’re done.

Firefox Private Window configured

(Image credit: TechRadar)

Beefing up security

In addition to the anti-tracking feature, Mozilla patched up its browser's security. The full list of fixed vulnerabilities can be found on Mozilla’s Security page where they range from low to high severity. And the developer fixed a compatibility issue afflicting screen readers on Windows. Apparently, screen readers would read the wrong thing on a page or outright fail. Mozilla also added the ability to disable the download panel from automatically opening whenever you start downloading.

Mozilla has gone so far as to call its browser the most secure in the world. While that might be considered hyperbole, the developer has consistently rolled out new security features to Firefox like making Total Cookie Protection a default setting and implementing Enhanced Cookie Clearing to wipe out third-party trackers.

If you’re interested in further boosting security, TechRadar recently updated its best VPNs list for 2022.

Cesar Cadenas
Contributor

Cesar Cadenas has been writing about the tech industry for several years now specializing in consumer electronics, entertainment devices, Windows, and the gaming industry. But he’s also passionate about smartphones, GPUs, and cybersecurity. 

Read more
Fingerprint
Profit over privacy? Google gives advertisers more personal info in major ‘fingerprinting’ U-turn
A finger touching the google chrome icon in the Windows 10 start menu
A new Chrome browser highjacking attack could affect billions of users - here's how to fight it
Home internet connection. A wlan router on desk with notebook in background.
Cloudflare admits security tool is blocking some challenger browsers
Abstract illustration of a young woman looking at a smartphone, as large eyes peek through from her hair
Want to hit restart on your online presence? Here's 5 tools you need to stay truly private online
Woman using credit card whilst sitting at a desk with a laptop and mobile phone in view
Best web browser of 2025
Rows of baked cookies displayed on a laptop monitor
Why should you clear your cache and cookies?
Latest in Software & Services
TinEye website
I like this reverse image search service the most
A person in a wheelchair working at a computer.
Here’s a free way to find long lost relatives and friends
A white woman with long brown hair in a ponytail looks down at her computer in a distressed manner. She is holding her forehead with one hand and a credit card with the other
This people search finder covers all the bases, but it's not perfect
That's Them home page
Is That's Them worth it? My honest review
woman listening to computer
AWS vs Azure: choosing the right platform to maximize your company's investment
A person at a desktop computer working on spreadsheet tables.
Trello vs Jira: which project management solution is best for you?
Latest in News
DeepSeek
Deepseek’s new AI is smarter, faster, cheaper, and a real rival to OpenAI's models
Open AI
OpenAI unveiled image generation for 4o – here's everything you need to know about the ChatGPT upgrade
Apple WWDC 2025 announced
Apple just announced WWDC 2025 starts on June 9, and we'll all be watching the opening event
Hornet swings their weapon in mid air
Hollow Knight: Silksong gets new Steam metadata changes, convincing everyone and their mother that the game is finally releasing this year
OpenAI logo
OpenAI just launched a free ChatGPT bible that will help you master the AI chatbot and Sora
An aerial view of an Instavolt Superhub for charging electric vehicles
Forget gas stations – EV charging Superhubs are using solar power to solve the most annoying thing about electric motoring