>>11716
Depends on your definition of privacy.
Privacy is a matter of trust. Open source software is more trustworthy because you can audit it, that doesn't mean there is no backdoor.
Trust is not necessary if you can verify the object. Usually it takes too much time or is impossible to do. For example, verifying chips is nearly impossible without destroying them. This mean you are stuck with trust at least on hardware.
On hardware level, the best you can do is open source FPGA, but they are too damn slow.
The next level is CPU without spectre. All modern CPUs are vulnerable to spectre and their friends, even with mitigation there are lots of 0days on ((( their ))) hands in this category. This excludes all CPU with out of order execution or branch prediction. For example, Allwinner A20 with cortex A7 fits the bill. These CPUs are very slow, but are still good enough for text-based work.
If that speed is too slow, you need to ignore spectre and go for CPU without built-in ((( security ))) such as Intel ME, AMD PSP or ARM Trustzone. For example Allwinner A10, A20, and Librebooted T400 with erased Intel ME.
If that is still too slow, you need to look for blobless or open sourced-blobs hardware. Many parts of your computer have processors, they can load firmware and run them. The best you can do is blobless or open-sourced blobs. For example, ath9k(_htc) wifi adapters have open sourced firmware and vivante gpus have full open source software (you can find them in i.mx6 processors).
If finding those exotic hardware is too expensive or too hard, or they don't satisfy your needs, you can at least look for hardware with open source drivers. For example, new AMD GPUs have open source drivers.
That's all for hardware.
Regardless of hardware, you can ruin your privacy easily and immediately by using bad software.
If getting a good hardware configuration is too hard, at least use an OS you compiled from source. This is the only way to make sure the binaries you are using come from the source inb4 trusting trust. For example install Gentoo. For reference I once built and run Gentoo on Allwinner A20.
If that's is too hard or takes too much time, at least run an open source OS without shady software such as systemd and/or less SJW influence. For example Artix or even better OpenBSD.
Even if you run a full suite of compiled software on A20, you can still ruin your privacy in a flash by connecting to botnet. For ultimate privacy, use only public wifi or hacked wifi and browse only overlay networks, eg onions and eepsites.
If you must access the clearnet, do the above but over TOR.
If getting out of basement sounds dangerous it is, there are tons of CCTV and normalfags using Apple spying devices all over the place, at least browse only onion and eepsites, or clearnet over TOR.
If you decide you can trust your isp for some reason, at least don't use any closed source services. i.e. they don't post server source source. And of course don't use botnet services such as jewgle and fagbook, or even god forbid chinktok.
And if you serious need to do that for some very unfortunate reasons, use a separate device, put it on a different lan during use, wipe it completely every each use and air gap it between use. Never post any real information of yourself online. If you must, compartmentalize your access. Of course, the best is to just not use any of those services.