FCC Eyes Shrinking Mobile Phone Carriers’ Breach Report Window

Companies such as AT&T Inc., Verizon Communications Inc., and T-Mobile US Inc. would have to notify regulators and law enforcement as soon as practicable after discovering a breach of customers’ data under a proposal from the Federal Communications Commission.

Telecommunications providers also would be required to notify customers without unreasonable delay, as part of proposed updates to the FCC’s existing data breach rules released Friday. The agency is asking for public comment on whether to set a specific timeframe— like within 24 or 72 hours of discovery of a breach—or if the deadline for disclosures should vary based …