ISIS uses traditional media platforms as well as widespread social media campaigns to propagate its ideology. With the broad distribution of social media, terrorists can spot, assess, recruit, and radicalize vulnerable persons of all ages in the U.S. either to travel to foreign lands or to conduct an attack on the homeland.
Our adversaries - terrorists, foreign intelligence services, and criminals - take advantage of modern technology to hide their communications; recruit followers; and plan, conduct, and encourage espionage, cyber attacks, or terrorism to disperse information on different methods to attack the U.S. homeland and to facilitate other illegal activities.
The FBI's mission is to protect the American people and uphold the Constitution. To carry out that mission, we're entrusted with a lot of authority, so our actions are subject to close oversight - from the courts, from our elected leaders, and from independent entities like the inspector general.