CISA Emergency Directive on DNS Infrastructure Tampering

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U.S. Department of Homeland Security US-CERT

National Cyber Awareness System:



CISA Emergency Directive on DNS Infrastructure Tampering [ 
https://www.us-cert.gov/ncas/current-activity/2019/01/22/CISA-Emergency-Directive-DNS-Infrastructure-Tampering ] 
01/22/2019 06:48 PM EST 
Original release date: January 22, 2019

The U.S. Department of Homeland Security (DHS) Cybersecurity and Infrastructure Security Agency (CISA) issued an 
emergency directive to address ongoing incidents associated with global Domain Name System (DNS) infrastructure 
tampering. CISA is aware of multiple executive branch agency domains that were impacted by the tampering campaign and 
has notified the agencies that maintain them.The directive requires Federal agencies to take specific steps and comply 
with reporting procedures to mitigate risks from undiscovered tampering, prevent illegitimate DNS activity, and detect 
unauthorized certificates.

Federal agencies should review Emergency Directive 19-01 [ https://cyber.dhs.gov/ed/19-01/ ] for required actions and 
reporting procedures.

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