The Canadian Catalyx cryptocurrency exchange has frozen trading and halted withdrawals after an emergency order by the Alberta Securities Commission on December 21. Catalyx consented to the order.Catalyx announced in a press release on December 28 that they had “recently discovered a security breach on the Platform in connection with the holding of crypto assets on behalf of clients. Management suspects that this security breach, which may involve an employee, has resulted in the loss of a portion of the crypto assets held by the Company on behalf of its clients”.Catalyx did not state how much had been stolen.