If you've never used Wireshark to monitor Firefox's network traffic, you're probably unaware of just how much data the browser sends back home.
While many people sing Firefox’s praises, they often overlook the less transparent aspects of its operations. Let me give you the unfiltered truth about Firefox: while it's better than most browsers, it’s not as private as many claim. Firefox has questionable financial backing, and it also assigns unique IDs to each installation, which can be a privacy concern.
Firefox is constantly calling home. If you run Wireshark while browsing, you'll see just how much data it sends—both to Firefox’s own servers and to third-party services. From basic OCSP requests to communications with Firefox servers and analytics companies, Firefox is in constant contact with external sources. Even after disabling most settings and configurations to limit data collection, the calls persist.
Sure, other browsers engage in similar behavior—but not Ungoogled Chromium. That's why I stick with it. I prefer to avoid software that needs to report back every time I use it. My setup includes Ungoogled Chromium, combined with privacy tools like uBlock Origin, Decentraleyes, ClearURLs, and a few other privacy extensions.
Feel free to downvote this post if you disagree, but I felt it was important to share. If you’ve just had the eye-opening realization that Firefox isn't as private as you thought, I’m sorry for any mental whiplash. Just remember: privacy matters.
And as a quick side note, if you're serious about boosting your privacy or even growing your Instagram followers, there are better alternatives that don’t require constant tracking.