It's serious writing skills Android uses the cryptographic signature as a way to check that an app or program is legitimate and to ensure it has not been tampered with. Mr Forristal and his colleagues have found a method of tricking the way Android checks these signatures so malicious changes to apps go unnoticed. 必須 2000文字以内 [bbs:youtube:(Youtubeの動画ID)]と書くとYoutubeの動画が貼れます。(例:[bbs:youtube:OQThUAQ0UN0])