* App Store review requires a lightweight security audit / checklist on the backend protections.
* App Store CTF Kill Switch. Publisher has to share a private CTF token with Apple with a public name (e.g. /etc/apple-ctf-token ). The app store can automatically kill the app if the token is ever breached.
* Publisher is required to include their own sensitive records ( access to a high-value bank account) within their backend . Apple audits that these secrets are in the same storage as the consumer records.