President Obama has nominated Jeh Johnson to succeed Janet Napolitano as Homeland Security secretary. If confirmed, Johnson would be the first African-American DHS secretary. DHS is charged with helping civilian agencies implement IT security and serves as a liaison with the private sector regarding cybersecurity matters. During his tenure as the top lawyer at the Defense Department, the military stood up the Cyber Command and the DHS and DoD established a joint approach to defend government, military and industrial critical IT infrastructure (see DHS, DoD to tackle Jointly Cyber Defense)”]
Source: https://www.govinfosecurity.com/obama-picks-new-dhs-secretary-a-6155