If you use Windows, Hardentools by Security Without Borders is worth a look. A new version was recently released.
“Hardentools is a simple utility designed to disable a number of "features" exposed by Microsoft Windows, and primary consumer applications.”
Security w/o Borders is “a collective of hackers and security professionals working towards a stronger and more secure civil society.”
@andreas What are the alternatives for disabling telemetry & invasive stuff?
@hinterwaeldler hmm I think if you didn’t want to use software to disable telemetry you could dig into the admin settings or use the command line. But a GUI makes it a whole lot easier to disable things in one place. I’ve also read after OS updates, some settings turn back on so you may need to repeat your steps each time which could get annoying.
Another open-source alternative is https://github.com/crazy-max/WindowsSpyBlocker
Personal instance of nitrohorse (nitrohorse.com).