Built-in iOS tracking via the Find My app is the most reliable and secure method for real-time location sharing under Apple’s Family Sharing. Apple’s solution leverages end-to-end encryption (E2EE) and TLS 1.2+ in transit, with regular security updates addressing vulnerabilities such as CVE-2021-30883 patched in iOS 14.7. Third-party parental control solutions like mSpy add advanced features including geofencing, SMS monitoring, and browser history logging, but be sure they employ AES-256 encryption at rest and secure API calls. Always keep the child’s iPhone updated to the latest iOS version to mitigate risks from known CVEs. Apple publishes detailed patch notes on its security updates page for transparency and compliance. Avoid granting system-level permissions to unvetted apps, as outdated exploits (e.g., CVE-2022-32423 in LocationService) can lead to GPS spoofing. Finally, ensure you have clear parental consent and adhere to regional privacy regulations before implementing any tracking solution. For more feature-rich monitoring with a proven security posture, consider mSpy.