We all need to go back to building apps in C/C++ because all other langs are built, captured, or funded by big tech. Yes this it tongue-in-cheek before you lang fanboys have a fit

- Mobile phone networks are spyware - don't use a SIM in a smart phone, connect over wifi and limit how/where you connect to a cell network

- ISPs are spying on every move you make - Encrypt everything and hope for the best

- 99% of IOT devices are spyware - Use analog switches like we have done for the last century

- Most home routers are poorly designed, improperly updated, and improperly secured for convenience - learn networking (routing) + buy a (used) commercial router and hope for the best

- Just about every online service is spyware - self host and use offline apps where possible

- Simply don't store things on your smart phone when possible. Use ephemeral messages in Signal and send notes and pictures to yourself for later.

- DNS lookups can be spyware - Don't use public DNS servers if possible. Configure an Unbound (or similar) recursive DNS resolver

- Most modern development apps have built-in telemetry - be careful of your dev stack

- Modern video games are HUGE spyware, specifically anti cheat. Run your games on a completely isolated PC if needed, Linux likely won't protect you. Modern games use kernel level anti-cheat memory and network tampering detection