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Governance, Risk, Audit & Privacy · Intermediate

Global Privacy Control (GPC)

Browser or extension signal communicating a user's request to opt out of sale or sharing of personal data.

Definition

GPC is sent as an HTTP header (Sec-GPC: 1) and JavaScript property. California regulations require businesses to treat it as a valid opt-out request, and several other states such as Colorado, Connecticut, and Texas require honoring universal opt-out mechanisms. Enforcement actions have cited failure to honor GPC.

Example

A site detects Sec-GPC: 1 and suppresses third-party advertising tags for that visitor.

Exam tip

GPC is legally binding in some US states; Do Not Track never was.

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