Please write 500 words and consider all the points

Pick an installed app on your PC or mobile device, or an Operating System component, that is making call-backs to servers on the Internet. Analyze this traffic and understand what information and telemetry data it is sending. Where is it going(who)? How often(when) is it transmitting? Is this documented somewhere in the EULA, purchase agreement, or user documentation? Is your privacy being violated? Are the call-backs necessary? How can you control, stop, or block this information from being sent? What else is interesting about app/os sending the data? Use debugging, sniffing, tracing, or whatever tools you need.