Isn't there a telemetry manifesto? I understand that developers want to peek into what their users are doing. That is the fruit of their labor after all. Howeve

Isn't there a telemetry manifesto? I understand that developers want to peek into what their users are doing. That is the fruit of their labor after all. However telemetry became increasingly easy lately, and it is impossible (in theory and in practice) to do it right. Collecting data of your users is - stupid - illegal - harming your users - makes your software a spyware so in summary, don't do that. Instead, do the exact opposite, and excessively delete any data that you may store. Also make sure that your users are exposed against 3rd party (isp, cnds and such) to the minimum when they check and get new updates. (Randomized update checks over TOR, for example.) They trust you, and allow your program to handle their network, so use it wisely. Also there are sane methods to know what your users are doing, for example you can buy usage blogposts from them, which you can showcase, and link in the manuals and support.