Android 17 has introduced Advanced Protection Mode (AAPM) to enhance user security by preventing non-accessibility applications from using the Accessibility API, which has been exploited by malware. AAPM allows only verified accessibility tools to utilize the API and implements stricter security settings, including blocking installations from unknown sources, limiting USB data access, and mandating Google Play Protect scans. Applications must declare themselves as accessibility tools with the attribute isAccessibilityTool="true" to use the Accessibility Services API. Additionally, Android 17 features a new contacts picker that allows applications to request access to specific contact fields instead of the entire address book, enhancing user privacy.