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ARTICLE · 17 OCTOBER 2025

California Enacts 30-Day Data Breach Notification Deadline

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On October 3, California Governor Gavin Newsom signed Senate Bill 446, which strengthens California's existing data-breach disclosure requirements.

United StatesPrivacy
A.J. Dhaliwal
A.J. Dhaliwal
Mehul Madia
Mehul Madia
Maxwell Earp-Thomas
Maxwell Earp-Thomas
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On October 3, California Governor Gavin Newsom signed Senate Bill 446, which strengthens California's existing data-breach disclosure requirements. The law requires businesses and individuals that conduct business in the state to notify affected consumers of a data breach within 30 calendar days of discovering or being notified of the incident. It also shortens the timeline for reporting large-scale breaches to the California Attorney General.

The amendments accelerate consumer-notification timelines and clarify coordination with law-enforcement investigations, signaling California's continued tightening of privacy and cybersecurity obligations for all sectors handling personal data.

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