Tokyo police have arrested a 15-year-old high school student on suspicion of fraudulently canceling the subscriptions of about 46,800 accounts on the Bandai Channel video streaming service by exploiting a system vulnerability.The Metropolitan Police Department (MPD)’s cybercrime countermeasure division arrested the resident of Tokorozawa in Saitama Prefecture for alleged obstruction of business.The boy has admitted to the allegation and said he did not have a grudge against the streaming service operator.