Maybe E2E, but the data eventually has to be decrypted to read it.

Then you learn that every modern CPU has a built-in backdoor, a dedicated processor core, running a closed-source operating system, with direct access to the entire system RAM, and network access. [a][b][c][d].

You can not trust any modern hardware.

https://en.wikipedia.org/wiki/Intel_Management_Engine

https://en.wikipedia.org/wiki/AMD_Platform_Security_Processo...

https://en.wikipedia.org/wiki/ARM_architecture_family#Securi...

https://en.wikipedia.org/wiki/Security_and_privacy_of_iOS

Some of those things are not like the others. TrustZone is not a dedicated core. It is a mode of the CPU, akin to x86's SMM