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Centropy, founded in January 1999, was a warez group which specialized in the unauthorized sharing of films. Touting many "0-day" and "negative day" releases, Centropy has released and pre-released numerous films. They primarily release DVD-Rips, Telesyncs and Screeners. They've added logos for bragging rights to their releases.
- Ripley, Amanda; Philadelphia, Desa; Forney, Matthew; Horn, Robert; Huang, Joyce; Quinn-Judge, Paul; Rajan, Sara; Rosenberg, Grant (2004-01-26). "Hollywood Robbery: How does a hit movie go from the free market to the black market? TIME retraces the trail.". Time. Vol. 163 no. 4. pp. 56–60.
Renegade release groups convert the film into a computer file and may also black out studio identifiers. The groups, such as Centropy or OBUS, then make the movies available online after adding their own special logos for bragging rights
- "#353: 06-30-05 JUSTICE DEPARTMENT ANNOUNCES INTERNATIONAL INTERNET PIRACY SWEEP". Archived from the original on 2011-05-30.
- "Justice Department Conducts International Internet Piracy Sweep". Computer & Internet Lawyer 22 (9): 34–35. September 2005. ISSN 1531-4944.