Do Apple / Google have a technical capability to modify apps without developer knowing?<p>I'm writing article about implications of using app stores for distributing Web3 apps.<p>Particularly I'm curious if they can potentially modify apps and introduce surveillance features. For example, if the government compels them to extract someone personal keys from Web3 wallet.<p>For clarity, I'm not asking if they are doing this actively. I'm curious if this is technically possible.