In her resignation letter, Nielsen said she was proud that “we have replaced complacency with consequences in cyberspace.”

U.S. officials have long touted their “whole-of-government approach” to cyberthreats, and a new memo advances that cause.

The National Protection and Programs Directorate will become the Cybersecurity and Infrastructure Security Agency.

Nielsen said DHS plans to use a newly established critical infrastructure hub to focus on the resilience of 'essential functions.'

Foreign adversaries are adapting their influence operations spreading disinformation to U.S. government and corporate defenses, according to Kirstjen Nielsen.

Senators sought answers from the DHS and FBI head about a reported widespread supply chain attack, as well as foreign election interference.

The CISA act would rebrand NPPD, giving it a more cyber-relevant name and cementing the office into law.

DHS will be much faster to alert state officials if their computer networks are being probed by hackers this election season compared to 2016, according to Kirstjen…

Despite the regular infusion of mea culpas, Facebook's Sheryl Sandberg and Twitter's Jack Dorsey touted improvements by both companies in combating foreign influence.

Secretary Kirstjen Nielsen painted a daunting picture of the global digital landscape, describing “a worldwide outbreak of cyberattacks and cyber vulnerabilities” that had moved from the “epidemic”…