There are so many sites out there!
When googling, narrow your results by using keywords and then adding site:gov or org or edu
terrorism statistics site:gov
terrorism prevention site:org
"The Global Terrorism Database (GTD) is an open-source database including information on terrorist events around the world from 1970 through 2014 (with annual updates planned for the future). Unlike many other event databases, the GTD includes systematic data on domestic as well as international terrorist incidents that have occurred during this time period and now includes more than 140,000 cases"
"ICT’s Research and Publications include short analyses and in-depth publications on a wide variety of topics including: terrorism, counter-terrorism, homeland security, radicalization process, cyber-terrorism, reviews from Jihadi Websites and insights from our database."
"Working closely with a range of partners, we use our growing suite of investigative and intelligence capabilities to neutralize terrorist cells and operatives here in the U.S., to help dismantle extremist networks worldwide, and to cut off financing and other forms of support provided by terrorist sympathizers."
"The National Counterterrorism Center (NCTC) was established by Presidential Executive Order 13354 in August 2004, and codified by the Intelligence Reform and Terrorism Prevention Act of 2004 (IRTPA). NCTC implements a key recommendation of the 9/11 Commission: "Breaking the older mold of national government organizations, this NCTC should be a center for joint operational planning and joint intelligence, staffed by personnel from the various agencies.""
"The primary mission of the Bureau of Counterterrorism (CT) is to forge partnerships with non-state actors, multilateral organizations, and foreign governments to advance the counterterrorism objectives and national security of the United States. Working with our U.S. Government counterterrorism team, CT takes a leading role in developing coordinated strategies to defeat terrorists abroad and in securing the cooperation of international partners."
"NIJ recognizes the critical need to expand existing policing and transnational crime portfolios to help respond to terrorism. In the past, NIJ has supported research about U.S. domestic right- and left-wing terrorism, but until now little research has been conducted on international terrorism."
"RAND is a world leader in research on terrorism, counterterrorism, counterinsurgency, disaster management, and homeland security—topics that affect a wide variety of policy areas and challenge individuals and nations worldwide."
"Country Reports on Terrorism is submitted in compliance with Title 22 of the United States Code, Section 2656f (the “Act”), which requires the Department of State to provide to Congress a full and complete annual report on terrorism for those countries and groups meeting the criteria of the Act"