Apple Intelligence Faces 76% Success Rate in Prompt Injection Attacks

• •Apple Intelligence is vulnerable to prompt injection attacks with a 76% success rate.
• •The attack methods include Neural Exec and Unicode manipulation techniques.
• •Apple has released patches in iOS 26.4 and macOS 26.4 to address these vulnerabilities.

Research from RSAC Research reveals vulnerabilities in Apple's on-device AI, Apple Intelligence, allowing for prompt injection attacks with a 76% success rate. The researchers disclosed their findings to Apple on October 15, 2025, leading to security enhancements in iOS 26.4 and macOS 26.4. These attacks can manipulate the AI without needing physical access to the device, relying instead on cleverly crafted text. The techniques used include Neural Exec and Unicode's right-to-left override feature, which can hide malicious instructions. This poses risks as attackers can potentially manipulate sensitive data or app functions. Users are advised to understand these risks and adjust their privacy settings accordingly.