Interview question: How to secure data integrity in TEEs?
so I was in this interview for a blockchain dev role, and they asked me about securing data in a TEE (Trusted Execution Environment) setup on Ethereum. The problem they gave me was: even if the TEE itself is secure, how do you stop someone from tampering with the data before it reaches the TEE?
Like, if external data gets altered mid-transit, that could break the whole smart contract’s security. I fumbled a bit trying to explain solutions.
Has anyone dealt with this? What tools or methods actually work in practice to validate data before it enters the TEE? Real-world examples would save me here!