Home Cyber DHS Secretary Nielsen Resigns, CBP commissioner Becomes Acting Chief CyberNews DHS Secretary Nielsen Resigns, CBP commissioner Becomes Acting Chief April 8, 2019 3 Share FacebookLinkedinTwitter You must be a Paid or Free Trial Member to Access this Content. Paid members, please login to view your news subscription(s). RELATED ARTICLESMORE FROM AUTHOR Cyber DHS Creates AI Safety and Security Board Cyber OMB Embraces Government Use of Artificial Intelligence Cyber Free Ransomware Scanning Tool From CISA Has Been Putting in the Work