Italian term pentito (Italian pronunciation: [penˈtiːto]; "he who has repented"; plural: pentiti) is used colloquially to designate people in Italy who were formerly part of criminal or terrorist organizations, and who, following their arrests, decided to "repent" and collaborate with the judiciary to help further investigations. The judicial category of pentiti was originally created in legislation passed by the Italian government in the 1970s to combat violence and terrorism during the so-called Years of Lead. The correct technical name used for them is "collaborators of justice" (Italian: collaboratori di giustizia). In the wake of the Maxi Trial in Palermo in 1986–87, and after the testimony of Tommaso Buscetta, the term came into widespread use in Italy for all former members of the Sicilian Mafia who had abandoned their organization and started helping investigators.
In exchange for the information they deliver, pentiti receive shorter sentences for their crimes, in some cases even freedom. In the Italian judicial system, pentiti can obtain personal protection, a new name, and some money to start a new life in another place, possibly abroad.
This practice is common in other countries as well. In the United States, criminals testifying against their former associates can enter the Witness Protection Program, and be given new identities with supporting paperwork. The Italian Mafia bosses Buscetta and Francesco Marino Mannoia were allowed to live in the U.S. under new identities in the Witness Protection Program when Italy did not yet have such a program.
Among the most famous Mafia pentiti is Tommaso Buscetta, the first important pentito. He was helpful to judge Giovanni Falcone in describing the Sicilian Mafia Commission or Cupola, the leadership of the Sicilian Mafia in the 1980s, and identifying the main operational channels that the Mafia used for its business.