The U.S. Secret Service is a federal agency under the Department of Homeland Security. It was established in 1865, originally to combat counterfeit currency. Today, its primary missions include protecting the President, Vice President, and visiting foreign dignitaries, as well as securing major national events. In addition to protection, the Secret Service investigates financial crimes, such as credit card fraud and cybercrime. The agency employs a range of specialized techniques and technologies to fulfill its duties, ensuring the safety of individuals and the integrity of the nation's financial systems.