Full Answer
Safari's Advanced Tracking Protection (formerly called Intelligent Tracking Prevention or ITP) is Apple's built-in privacy system that aggressively limits how websites can track users across the web. What It Does Cookie Restrictions:
- JavaScript cookies capped at 7 days (24 hours from ad clicks)
- Third-party cookies blocked entirely
- Storage partitioned per-site Fingerprinting Prevention:
- Limits access to system fonts
- Standardizes user agent strings
- Reduces canvas fingerprinting effectiveness
- Blocks known fingerprinting scripts Cross-Site Tracking Blocks:
- Prevents tracking pixels from building profiles
- Blocks known tracker domains
- Limits referrer information
- Partitions cache and storage Link Decoration Detection:
- Identifies tracking parameters (fbclid, gclid, etc.)
- Applies stricter limits when detected
- Classifies referring domains Why Apple Built This Apple positions privacy as a core product value. Safari's protections:
- Ship enabled by default
- Cannot be disabled by users
- Update automatically with macOS/iOS...