SHARE THIS VIDEO —
Homeland Security Chief: ISIS 'Rich' and 'Good at Social Media'
This version of Mmvo42841157889 - Breaking News | NBC News Clone was adapted by NBC News Clone to help readers digest key facts more efficiently.
U.S. Secretary of Homeland Security Jeh Johnson talks about terror groups' use of social media and why ISIS is a threat.
NBC News Clone will keep curating essential reads for you — simplified and optimized.
