Protecting the United States from terrorist attacks is the FBI’s number one priority. The Bureau works closely with its partners to neutralize terrorist cells and operatives here in the United States, to help dismantle extremist networks worldwide, and to cut off financing and other forms of support provided to foreign terrorist organizations.
International terrorism: Violent, criminal acts committed by individuals and/or groups who are inspired by, or associated with, designated foreign terrorist organizations or nations (state-sponsored).
Domestic terrorism: Violent, criminal acts committed by individuals and/or groups to further ideological goals stemming from domestic influences, such as those of a political, religious, social, racial, or environmental nature.
The FBI is committed to remaining agile in its approach to the terrorism threat, which has continued to evolve since the September 11, 2001 terror attacks. Years after these attacks, the threat landscape has expanded considerably, and international terrorism remains a serious threat. The threat of domestic terrorism also remains persistent overall, with actors crossing the line from exercising First Amendment-protected rights to committing crimes in furtherance of violent agendas.
Many factors have contributed to the evolution of the terrorism threat on both the international and domestic fronts, such as:
- Lone offenders: Terrorist threats have evolved from large-group conspiracies toward lone-offender attacks. These individuals often radicalize online and mobilize to violence quickly. Without a clear group affiliation or guidance, lone offenders are challenging to identify, investigate, and disrupt. The FBI relies on partnerships and tips from the public to identify and thwart these attacks.
- The Internet and social media: International and domestic violent extremists have developed an extensive presence on the Internet through messaging platforms and online images, videos, and publications. These facilitate the groups’ ability to radicalize and recruit individuals who are receptive to extremist messaging. Social media has also allowed both international and domestic terrorists to gain unprecedented, virtual access to people living in the United States in an effort to enable homeland attacks. The Islamic State of Iraq and ash-Sham (ISIS), in particular, encourages sympathizers to carry out simple attacks wherever they are located—or to travel to ISIS-held territory in Iraq and Syria and join its ranks as foreign fighters. This message has resonated with supporters in the United States and abroad.
It is important for people to protect themselves both online and in-person, and to report any suspicious activity they encounter. The simplest ways to accomplish this are to:
- Remain aware of your surroundings.
- Refrain from oversharing personal information.
- Say something if you see something. The insular nature of today’s violent extremists makes them difficult for law enforcement to identify and disrupt before an attack. Many times, a person’s family or friends may be the first to notice a concerning change in behavior that may indicate a person is mobilizing to violence.
Additional information regarding how to report suspicious activity and protect the community is available via the resources below.
- Nationwide SAR Initiative (NSI): The Nationwide Suspicious Activity Reporting (SAR) Initiative is a joint collaborative effort by the U.S. Department of Homeland Security, the FBI, and law enforcement partners.
- Community Preparedness Tools: The Department of Homeland Security offers security resources for businesses and communities.
- The Contact Us section of fbi.gov provides detailed contact information for the FBI’s local and international offices. You can also submit a tip online.
- The U.S. Violent Extremist Mobilization Indicators booklet lists behaviors that could mean someone is planning ideologically motivated violence.
The High-Value Detainee Interrogation Group (HIG) brings together intelligence professionals from the U.S. Intelligence Community to conduct interrogations that strengthen national security and that are consistent with the rule of law.
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