a computer hacking campaign
campaignは以前にも取り上げましたが、「パソコンハッキング犯罪」、「遠隔操作事件」のように「事件」「犯罪」という訳をあててもいいようですね。（GP）
http://d.hatena.ne.jp/A30/20120708/1341740412
http://d.hatena.ne.jp/A30/20120726/1343255071
Japan man arrested in bizarre hacking case
The Australian -- Feb 11
Japanese police have arrested a man suspected of being behind a computer hacking campaign following an exhaustive hunt that at one stage had authorities tracking down a cat for clues, reports said.
Yusuke Katayama, 30, was arrested on Sunday on charges of using a remote computer and sending a mass killing threat to a comic book event after months of evading investigators with a series of vexing cyber riddles, according to NHK.
The broadcaster aired footage of detectives escorting a chubby man with glasses into a police station.
Katayama is believed to have sent numerous threats from computers around the country, including against a school and a kindergarten attended by Emperor Akihito's grandchildren.
