The present invention provides an account processing method, apparatus system and server for providing an alert message, and relates to the field of computer technology. The method is for use in a server processing a first account, the method comprising: determining whether the first account meets a processing condition; if the first account meets the processing condition, freezing all information related to the first account; and providing an alert message based on the processing condition to a second account associated with the first account. The embodiments of the present invention comprise, after determining that the first account meets a processing condition, freezing all of the information associated with the first account and displaying an alert message to the second account associated with the first account. Friends of the legitimate user can see the alert message associated with the first account during the first account's freezing period, and can contact the legitimate user offline and inform the user that the legitimate user's account is frozen or about to be cancelled. Thus, embodiments of the present invention address the problem of an illegal user processing the first account without the knowledge of the legitimate user, and prevent the immeasurable loss caused by the cancellation of the first account.