Police first, customers second
In New Jersey, the State Police hear first. A business shall, in advance of the disclosure to the customer, report the breach of security and any information pertaining to it to the Division of State Police in the Department of Law and Public Safety for investigation or handling.
The customer disclosure then follows in the most expedient time possible and without unreasonable delay, consistent with the legitimate needs of law enforcement. The session law sets no number of days for either step. The State Police report applies to any breach that requires notice to customers, with no minimum count.