The UK government issued a secret Technical Capability Notice to Apple, requesting access to encrypted iCloud data, which Apple resisted by withdrawing its Advanced Data Protection feature for new UK users. This has resulted in a two-tier level of encryption for Apple customers in the UK, with existing users who had enabled the feature before its withdrawal still protected. The UK government's demand was initially global but was later narrowed to only affect UK citizens. Apple's decision has sparked a debate about the balance between national security and individual privacy.