Comment by DarkBell13

The extraterritorial effect of the law is profoundly troubling, especially the prohibition on revealing the existence of the Technical Capability Notice. However, Apple would almost certainly be subject to lawsuits in the US and EU if it secretly added a backdoor to iCloud Advanced Data Protection, because doing so would violate their privacy policy and would likely give rise to fraud claims. They could kill iCloud Advanced Data Protection entirely, or they could add a backdoor and say there is a backdoor, but they could not, without being exposed to liability, secretly add a backdoor while simultaneously claiming that the data is end-to-end encrypted and nobody other than the user can access the data.