Six-month anti-piracy strategy delays Dark Knight piracy for just 38 hours

July 29, 2008 Warner Bros. devoted six months to an unprecedented anti-piracy strategy for the release of "The Dark Knight", and have deemed the 38 hour period between the film's premiere screening and its first appearance on file-sharing sites to be a success - keeping bootleg DVDs off the streets as the film racked up a record-breaking US$158.4 million on its all important opening weekend.

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