The author of numerous articles and five books on terrorism, Kushner’s latest work is Holy War on the Home Front: The Secret Islamic Terror Network in the United States (Penguin). Law enforcement agencies across the country and throughout the world have used Kushner's analysis in Holy War on the connection between drugs and terrorism to guide their own investigations of the problem. The Metropolitan Police Service of the United Kingdom cites Kushner's analysis in Holy War in their training module for law enforcement officers and airline security personnel.His best-selling Encyclopedia of Terrorism (Sage) is considered the gold-standard of terrorism reference works, and has won numerous awards from such organizations as the American Library Association and the Library Journal. Kushner also edits issues on terrorism for the American Behavioral Scientist and serves on the journal's prestigious editorial board as well as the boards of a number of other journals both here and abroad.

In need of a dynamic speaker! Dr. Harvey Kushner is ready to address your organization. Whether it’s a simple briefing session or discussion on protecting America, Kushner can help you educate and motivate your group. As Congressman Peter King (R-NY) noted, "Harvey is a good friend and long-time anti-terror expert who was among the very first to warn of al Qaeda, well before 9/11." Joseph Wolfinger, Assistant Director in Charge, FBI Academy (ret) writes, "His excellent sense of delivery and presentation demonstrates why he is in such demand as a public speaker." General John Mulholland, Commanding General, US Army Special Operations, Fort Bragg, said, "Thank you so much for visiting and speaking at the Command today. I sincerely appreciate you taking the time to be with us." Jerald Podair,Robert S. French Professor of American Studies, Lawrence University observes, "Harvey Kushner cut through all the wishful thinking and self-delusion about the threat Americans face from global terrorism. He showed us-not with vague rhetoric but cold, hard facts-that we are on imminent danger from those who hate us not for what we have done, but what we stand for. I doubt anyone in our audience will forget his talk." Dick Brennan, CBS News, said, ""Harvey Kushner is, simply put, the best terrorism analyst in the business. I've worked with Harvey for ten years on television and radio. His knowledge of homeland security issues and grasp of the geopolitical threats facing the United States has given my viewers and listeners a deep insight into the crucial issues of our time."

Lecturer and/or consultant on terrorism for the following agencies, associations, corporations, and universities: U.S. Probation Department; U.S. Pretrial Services; U.S. Immigration and Naturalization Service; U.S. Customs Service; U.S. Drug Enforcement Administration; Department of Homeland Security; USAF Special Operations School; US Army Special Operations Command; Chief of Naval Operations Strategic Studies Group; FBI National Academy; FBI Behavioral Science Unit; FBI Counterterrorism Division Fly Away Team; Society of Former Special Agents of the FBI; Federal Aviation Administration; Association of Former Intelligence Officers; Southern States Correctional Association; American Society of Industrial Security; The Leadership Institute; New York Hotel Association; Mystery Writers Association; New York State Hospital Association; New York City Museum Security Directors; Association of Government Accountants; New York State Association of Licensed Detectives; New York Society of Forensic Sciences; John F. Kennedy International Airport Airlines Management Council ; Crime Stoppers International; Association of Certified Fraud Examiners; New Jersey State Police Intelligence Division; National Petrochemical Refiners Association; New York State Emergency Management Association; New York State Association of Chiefs of Police, Nassau County Police Department; Suffolk County Police Department; Freeport Police Department; Hempstead Police Department; Port Washington Police District; New York State Park Police; Orangeburg Police Department; Honeywell; Citigroup Smith Barney; ANBEX; SONY; Albert Einstein College of Medicine; Mount Holyoke College; Lehman College; Fordham University Law School; University of Virginia; Queens College; New York University; Lawrence University; South Arkansas State University Tech; Texas A & M University; Saginaw Valley State University; American School for the Deaf; University of Colorado; University of Warsaw; Keuka College, among others.

Wrote the expert’s report for a successful multimillion-dollar civil litigation arising out of the 1993 bombing of the World Trade Center (Duffy v. Port Authority of New York & New Jersey and Pesce v. Port Authority of New York & New Jersey). Served as an expert during the U.S. Embassy bombing trial (U.S. vs. Usama bin Laden, et al.) in 2001 and wrote the expert’s report in a landmark matrimonial case in New York City (Charpie v. Charpie) involving international terrorism after the 2001 attack on the World Trade Center. He also served as expert from 2001 to 2003 in a civil litigation involving airport security procedures at New York's MacArthur Airport. Prior to 2001, Kushner served as a special consultant on terrorism to the president of Crime Stoppers International from 1996-1997. He also served as an individual expert on terrorist victimization for the United Nations in Vienna, Austria, at there Ancillary Meeting in 2000.After the terror attacks of September 11, 2001, Kushner was asked to address terrorism and safety in New York City’s public spaces before the City Council of New York. He was invited by 9/11 Commission to participate in a VIP-briefing before the release of its final report. He served as a Subject Matter Expert for the Homeland Security Advisory Council. He also evaluated equipment requests for countering terrorist events for DHS and FEMA.Kushner also worked as a consultant on terrorist attacks vis-à-vis shopping malls for the Police Foundation, Washington, DC, in 2005. In 2006, Kushner was asked by the U.S. Department of State to brief officials from India on terrorism and criminal conspiracies. In 2008, he held a similar briefing for the U.S. Army Special Operations Command at Fort Bragg, NC.

From exposing terrorists on The O'Reilly Factor to explaining the meaning of high alert on the Oprah Winfrey Show to discussing airport security on Larry King Live, Kushner is seen on all the major cable and television networks. On the radio, he is a frequent guest of the "Heavy Hundred," Talkers Magazine's most important radio talk show hosts.Kushner has worked as a contributor and guest host for the FOX News Channel and MSNBC, as well as hosted a call-in talk show on the most-listened-to talk radio station in the country, WABC radio in New York. For many years, the Dr. Harvey Kushner Show was a fixture on WGBB, Long Island's first radio station and one of the oldest in the country.

Advised and trained head of National Security Bureau and Human Rights Defender on matters related to criminality and terrorism. Also advised and trained members of the Law and Justice Party on matters related to terrorism . Briefed the former prime minister and foreign minister on matters related to terrorism and criminality. Served as an expert for the Polish Parliamentary Committee tasked with investigating the April 10, 2010, plane crash that killed Polish President Lech Kaczynski.

Monitored suspected terrorists while they were under the jurisdiction of the Eastern District of New York's Probation Department. Analyzed all matters related to domestic, transnational, and international terrorists.