Virtual asset exchange Coinone has launched a legal challenge against sanctions imposed by the Financial Intelligence Unit (FIU), according to Edaily. With an application for an injunction filed just one day before the sanctions were to take effect, a dispute over the validity of the measure is expected to intensify. The core of these sanctions is to restrict deposits and withdrawals of virtual assets to and from external exchanges for new users. Existing users are not affected, and new users can still use trading functions other than deposits and withdrawals.