What is http Alternative Services

https://www.ietf.org/archive/id/draft-ietf-httpbis-rfc7838bis-00.html

Your OS is listed as 11.7 for a 2023 model MBA in your info. That's two full OS versions behind.

You can upgrade your Mac to the latest version of Ventura ... 13.5.1. I suggest you do that to get to the latest bug fixes, features and security enhancements.

Hi Bewldered!

To my understanding the HTTP alternative services are something a webserver may send to your browser as a hint, that there is also another web location for the requested service.

At least that is how I understand the documentation on MDN (see link below).

I suppose the entry in Safari's website data means, that Safari knows of this alternative location.

Meaning: This alternate-location entry should be no privacy issue.

Here is a technical description: https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Alt-Svc#

I'm more concerned about privacy and security than convenience. For that reason, when I close Forefox all cookies are deleted. Safari is cleansed in similar fashion.

If a site puts data on your computer, there's no harm in deleting it. Generally that data, cookies and the like, are often used to make logging in more convenient. They also can be used for tracking.

What a different Mac does is of no consequence, you have to deal with the Mac you have now. And if the only way to delete the items in question is one by one then that's what you do.

For privacy, I have an ad blocker to block intrusive ads and a privacy extension to deny websites from saving data locally or used to track my online activity.