Each time you visit the site, it collects data about your device - such as system settings - and uses this data to display a page adapted to your device. Some companies try to use this data to identify your particular device - this is called fingerprinting. To avoid this, Safari provides a simplified version of your system configuration. Your Mac will look like most other Macs, which seriously reduces the ability of tracking programs, trackers, to reliably identify your device.
Some sites use third party content providers. You can prevent third-party content providers from tracking your activity between sites to advertise services and products.
To do this, you need to enable the Prevent cross-site tracking checkbox in Safari> Preferences> Privacy. It is enabled by default.
Social media sites put Share, Like, or Comment buttons on third-party sites. These buttons can be used to track your actions even when you are not using them. Safari blocks such tracking. If you need to use them, you will need your site permission to view your activity on other sites.
All 4 paragraphs above are free translation from the Apple website ( user guide). And I came across this topic because I just installed the new MacOs Big Sur. As usual, after updating the operating system, it's nice to climb the system, see what has changed and what is new. Well, that's how I got to the button "Show the privacy report for this site", I had seen it before, but did not pay attention, now, in curiosity mode, I pressed it.
What I saw did not surprise me, I understand - a lot of things hang on the sites. But it became interesting to watch. Click on the button in the upper right corner.
We see:
there are 25 trackers in the list (the first are visible in the figure) and 7 sites:
Although it is written that the report is for 30 days, in fact, the counter has gone since the installation of MacOs Big Sur. In the list we see only those sites and trackers that I visited before I decided to write about it. Only one site was not there, the astute reader will guess which one.
How many will be on this list in thirty days, I think hundreds of sites and hundreds of trackers. And judging by Apple's claims, there are hundreds of cases where Safari interferes with data collectors from analyzing my system fingerprint. If so, great, I agree. In any case, it's good that you can quickly take a look at how hung a particular site is with all sorts of tracker gizmos.
which site was not listed?
there was no Apple site on the list, which I opened for text about this feature.
