https://www.cnet.com/news/nsa-reportedly-installing-spyware-on-us-made-hardware/

https://www.eteknix.com/nsa-may-backdoors-built-intel-amd-processors/

https://www.theguardian.com/us-news/2015/feb/23/nsa-director-defends-backdoors-into-technology-companies

https://www.forbes.com/sites/steveblank/2013/07/15/your-computer-may-already-be-hacked-nsa-inside/#211ef43d19d4

https://www.infoworld.com/article/2608141/snowden--the-nsa-planted-backdoors-in-cisco-products.html

https://www.wired.com/2015/03/researchers-uncover-way-hack-bios-undermine-secure-operating-systems/

https://www.techdirt.com/articles/20140526/08355827362/do-personal-computers-come-with-nsa-surveillance-devices-built-in-as-standard.shtml

I could find more on this, but I've seen enough to satisfy me that those who would spy on us are, and through the hardware as well.