Method and device for detecting abnormal account number

The invention discloses a method and a device for detecting abnormal account numbers. The method for detecting abnormal account numbers comprises: acquiring account number behavior data, the account number behavior data comprising login behavior data of the account number and/or operation behavior data of the account number, the login behavior data of the account number comprising platform login information or login method information; according to history login data of the account number and/or preset abnormal operation data, detecting the acquired account number behavior data; and according to the detection result, determining the level of account number abnormity and notifying the account number. The method and the device can detect acquired login behavior data and/or operation behavior data of an account number, and determines the level of account number abnormity and notifies the account number, thereby reducing risk of the abnormal account number and improving security of the account number.