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The Madison Avenue Field GuideA field guide to marketing & advertising, by Brandon Mina

GlossaryPrivacy & IdentityOpt-Out of Sale or Sharing

Privacy & Identity

Opt-Out of Sale or Sharing

A consumer right under US state privacy laws to stop a business from selling their data or using it for targeted or cross-context advertising.

By Brandon MinaCEO, BrandPilot AIUpdated November 2026

Short answer

Opt-out of sale or sharing is a consumer right under US state privacy laws to stop a business from selling their personal data or using it for targeted or cross-context behavioral advertising. Businesses must offer a clear way to opt out and, in many states, honor browser signals such as Global Privacy Control.