Shutting Down the Cell Phone Scammers: The FCC Adopts Rules to Crack Down on Fraudulent Practices against Wireless Phone Users

On November 16, 2023, the Federal Communications Commission (“FCC”) released a Report & Order (“Order”) and Further Notice of Proposed Rulemaking (“FNPRM”), adopting measures to address two techniques bad actors frequently use to access victims’ cell phone accounts: (1) SIM swapping and (2) port-out fraud.

Key Takeaway: To combat growing instances of SIM card and number porting fraud that expose wireless customers, the FCC is requiring wireless providers (including mobile virtual network operators, or “MVNOs”) to implement customer authentication and other security methods to prevent these fraudulent practices.


SIM swapping is a fraudulent practice where a bad actor impersonates a customer of a wireless provider in order to transfer the victim’s mobile service to the bad actor’s device. Similarly, porting-out involves a bad actor requesting that a wireless provider transfer a victim’s phone number to a new wireless account controlled by the bad actor. When successful, both of these practices allow a bad actor to control the victim’s mobile account and exploit this access to customer proprietary network information (CPNI) and financial or social media accounts for fraudulent purposes.

New Framework: Updating the CPNI and LNP Regulations.

In order to protect consumers from these fraudulent practices, the FCC established a new baseline framework to combat SIM swapping and port-out fraud by updating its CPNI and local number portability (LNP) rules. The FCC rejected prescriptive requirements, instead focusing on baseline rules protecting against SIM swapping and port-out fraud while giving wireless providers flexibility to tailor their specific security measures.

Among other proposed regulations, the Order would require wireless providers to take the following actions:

Customer Authentication and Notification

Internal Processes and Consumer Safeguards

The Order will be effective 30 days after publication in the Federal Register, and compliance with the rules described above will be required six months after the effective date of the Order—with the exception of some rules (primarily, the rules requiring customer notification and internal security procedures) that will become effective on the later of six months or OMB approval.

Further Notice of Proposed Rulemaking.

The FNPRM seeks comment on whether to harmonize the existing requirements governing customer access to CPNI outside of the context of SIM changes with the new SIM change authentication and protection measures adopted in the Order. Comments on the FNPRM are due 30 days after the date of publication in the Federal Register.

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National Law Review, Volumess XIII, Number 334