Method and server system for user login verification are disclosed. The method includes: obtaining a verification request from a first device for an account operation requested by a user using a first account; identifying, from the server system, usage history data associated with the first account, including data regarding usage of the first account on the first device; determining, in accordance with the data regarding the usage of the first account on the first device and one or more predetermined usage history criteria, whether the account operation associated with the first account on the first device is safe; and in accordance with a determination that the account operation associated with the first account on the first device is not safe, initiating a verification process based on a second device that qualifies as being safe for the account operation.