TRIPwire, the Technical Resource for Incident Prevention, is the Department of Homeland Security‘s secure, online, collaborative information-sharing and resource portal for the Nation’s security and emergency services professionals across the Federal, State, local, and tribal sectors. Information and resources on TRIPwire increase awareness of evolving Improvised Explosive Device (IED) tactics, techniques, and procedures (TTPs), as well as incident lessons learned and counter-IED preparedness. Developed and maintained by the Office for Bombing Prevention, TRIPwire combines expert analyses and reports with relevant documents, images, and videos gathered directly from extremist sources to help users anticipate, identify, and prevent IED incidents. TRIPwire is available at no cost to registered subscribers and features a publicly accessible home page with valuable preparedness information for the whole community.