The Global Terrorism Database (GTD) is an open-source database including information on terrorist events around the world from 1970 through 2017. 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 180,000 cases.
However, the service can’t be continued in 2017. Since 2012, the majority of the costs of collecting the GTD have been funded by the U.S. State Department, for the past year almost exclusively. The contract with the State Department ended in May 2018 and, although START has received only positive feedback from the Bureau of Counterterrorism and although the 2018 data collection was well underway, START has recently learned that it was not awarded a follow-on contract for base data collection.
At the moment, the loss of the State Department funding means two things: First, START does not currently have funding to complete collection of 2018 data, nor are they able to publish data beyond 2017. See the website for further updates.