[volderette]

This is not how GTM server side works. There is not a single call to Google domains from the client, when GTM server side is set up to its fullest. The config (gtm.js) will be loaded from my subdomain and not googletagmanager.com. Also gtm.js can be renamed.

[x0x0]

Per the docs here [1], that is not true. You continue to load gtag.js off the googletagmanager.com domain; subsequent events can flow to a custom domain.

[1] https://developers.google.com/tag-platform/tag-manager/serve...

[xigoi]

Couldn't you still recognize the script by its content?

[freedomben]

No because the script contents can change from site to site. Maintaining an index for every site would get you closer, but individual sites can trivially tweak things to break fingerprinting as often as they want. Even on every request.

[shafyy]

Exactly, this is already done for tracking scripts, since it's commong to use proxies to load tracking scripts.

[ComodoHacker]

Not with dynamic obfuscation.