The security breach has resulted in some losses and was stopped by taking the site offline and calling in the authorities. ... (snipped) ...
Taking the site down for a long time will also result in lost daily revenue. The site's hosting and other monthly expenditures don't all stop when the site is kept in maintenance mode until who knows when, right? Can't the user/s involved have their accounts frozen instead so everyone else can continue trading? After all, any gains resulting from trading of unaffected coins can still contribute to revenue that can pay off cryptopia's expenditures....