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DHS Issues Emergency Directive on DNS Security



On Jan. 22, US-CERT issued notice of a CISA emergency directive on DNS infrastructure tampering. The notice was the typically brief CERT notice, but it linked to an emergency directive at that called on anyone managing .gov or other agency-managed domains to take a series of steps aimed at remedial efforts — and to take those steps very quickly.

“The fact that they put out the warning means that there’s been some sort of successful breach against a government site that they’re recovering from,” says John Todd, executive director at Quad9. “This type of warning means that there’s been some damage.”

Marc Rogers, executive director of cybersecurity at Okta, agrees. “CERT puts out notifications on a regular basis, but I haven’t seen one with such a strong sense of urgency before, which tells me that DHS is acting on actual knowledge of an ongoing attack,” he says.

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