Pseudonymization

IDFA

Apple's Identifier for Advertisers. Opt-in only since iOS 14.5 ATT.

ATT

App Tracking Transparency. Apple's consent framework. ~35% opt-in.

Privacy Sandbox

Google's initiative replacing cookies with Topics API and more.

GDPR

EU regulation. Explicit consent for data collection. Fines up to 4% global revenue.

Clean Room

Secure environment for analyzing combined datasets without raw data exposure.

CCPA

California Consumer Privacy Act. Opt-out mechanism for data selling.

CPRA

California Privacy Rights Act. Enhanced CCPA with new rights.

PIPL

China's Personal Information Protection Law. Strictest in Asia.