Contact Us

CISA Central

CISA Central is the simplest way for critical infrastructure partners and stakeholders to engage with CISA. Contact CISA Central by email, or by phone, 888-282-0870.

Encrypted Email Communications

For encrypted email communications, email using the following PGP/GPG key:

  • PGP/GPG key: 0xC0BBC078
  • Fingerprint: 5FDC 076A 3CCE AD43 BD92 ED58 C963 F969 C0BB C078

CISA Regional Contacts

CISA supports Federal, State, local, tribal and territorial government mission partners and the private sector stakeholder community through regional offices that provide a range of cyber and infrastructure security capabilities.

CISA Mailing Address

Cybersecurity and Infrastructure Security Agency Stop 0380
Department of Homeland Security
245 Murray Lane
Washington, D.C. 20528-0380

Report a Cybersecurity Incident

Organizations should report anomalous cyber activity and/or cyber incidents 24/7 to or (888) 282-0870.

Report a Critical Infrastructure Incident

If a significant security incident is detected while in progress, the facility should immediately call local law enforcement and emergency responders via 9-1-1. Similarly, if the event has concluded but an immediate response is still necessary, the facility should immediately call 9-1-1.

Once the incident has concluded and the facility has addressed any resulting emergency, the facility should use a nonemergency number to contact local first responders and other federal, state, and local law enforcement entities, as applicable.

Reporting an Incident to CISA

Once an incident has concluded and any emergency has been addressed, report significant cyber and physical incidents to the Cybersecurity and Infrastructure Security Agency (CISA) Central at

CISA Central provides a critical infrastructure 24/7 watch and warning function and gives all critical infrastructure owners and operators a means to connect with and receive information from all CISA services.

Reporting a Potential CFATS Violation

Chemical Facility Anti-Terrorism Standards (CFATS) Chemical Facility Security Tip Line: 877-394-4347 (877-FYI 4 DHS) or email For more information, visit the Report a Potential CFATS Violation webpage.

You may report concerns on voicemail anonymously. If you want a return call, leave your name and number. Calls to this tip line involve the CFATS regulation at your facility or another facility.

"If You See Something, Say Something®"
If you see suspicious activity, please report it to your local police department. If you are experiencing an emergency, please call 911.

Request a CISA Speaker

If you would like to request CISA to participate in a speaking engagement, please complete a Speaker Request Form and email it to


Please direct media inquiries to or call 703-235-2010.

Working with CISA

Industry partners should email to connect with CISA.

Service of Process


Effective immediately and until further notice, the Cybersecurity and Infrastructure Security Agency (CISA), Office of the Chief Counsel is not accepting personal service of process for actions against the agency or its personnel in their official capacity, due to the on-site staffing shortages caused by the COVID-19 circumstances. The following procedures do not modify the requirements of Federal Rules of Civil Procedure, Rule 4(i)(3) regarding service on an officer or employee sued in his or her individual capacity and should not be used in any action to attempt to perfect service upon any agency officer or employee sued in his or her individual capacity.

Service of Process of Summons and Complaints*

Pursuant to Federal Rules of Civil Procedure, Rule 4(i)(2), mail summons and complaints against the agency or its personnel in their official capacity only by registered or certified mail, to:

Office of the Chief Counsel

To aid in prompt handling of any summons and complaint, parties also are encouraged to email a copy to

Service of Process for Subpoenas

Email subpoenas against the agency or its personnel in their official capacity only to  You may also send a courtesy copy by registered or certified mail to the address above. 

* This does not apply to a request to commence administrative adjudication proceedings pursuant to 6 CFR 27.310(b) of the Chemical Facility Anti-Terrorism Standards (CFATS).

Subscribe to Stay Informed 

Enter your email via the link below to subscribe to email updates on a variety of topics.


Provide Feedback or Make Complaints to DHS

The U.S. Department of Homeland Security has many avenues for the public to provide feedback and make complaints involving DHS employees or programs, alleged violations of civil rights and civil liberties, immigration filing, travel redress, and other types of grievances.

Provide feedback