Title 6 › CHAPTER 1 — HOMELAND SECURITY ORGANIZATION › SUBCHAPTER XVIII — CYBERSECURITY AND INFRASTRUCTURE SECURITY AGENCY › Part B — Critical Infrastructure Information › § 673
Voluntarily shared critical infrastructure information sent to a covered federal agency with a clear written or soon‑after written statement is kept private. The information cannot be made public under the Freedom of Information Act. It also cannot be used in civil lawsuits, or shared outside the allowed uses, without the submitter’s written consent if the information was sent in good faith. Federal employees may only use or share the information to protect infrastructure, to help a criminal investigation or prosecution, or to give it to Congress or the Government Accountability Office. If a state or local agency gets the information, it must protect it the same way and cannot force disclosure under state law or share it without written consent. Sending information does not waive other legal protections like trade secret rights, and it does not count as meeting any other legal filing requirements. “Express statement” means a written label on submitted documents saying the information is voluntarily given for protection, or a written note filed soon after an oral submission. The Department of Homeland Security had to set uniform rules for receiving, storing, and protecting this information within 90 days after November 25, 2002. Those rules must include acknowledging receipt, keeping the submission marked as voluntary, secure storage, and protecting identities and business‑sensitive details while allowing needed government sharing and warnings. A federal employee who knowingly discloses this protected information unlawfully can be fined, imprisoned up to 1 year, or both, and removed from their job. The government may issue alerts or warnings based on the information but must protect the source and sensitive details. The President may delegate authority to enter voluntary security agreements.
Full Legal Text
Domestic Security, Source: USLM XML via OLRC
Legislative History
Reference
Citation
6 U.S.C. § 673
Title 6, Domestic Security
Last Updated
Sep 23, 2026
Release point: 119-110