"This judgment has confirmed that it commits a crime and violates copyright laws for the act of using BT software to upload and distribute," said customs official Tam Yiu-keung in a written statement.
He added the judgment would have a deterrent effect, a view endorsed by industry watchdogs such as the Hong Kong branch of the International Federation of the Phonographic Industry.
"Those uploaders and downloaders who wish to rely on the grey areas of the law will have no more excuses," said Ricky Fung, the body's Chief Executive Officer.
Big Crook put copies of "Daredevil," Miss Congeniality," and "Red Planet" on the BitTorrent site. I'd rather spend 90 days in jail than watch those three movies.