Abnormal contact information detection method, server and system

Disclosed are an abnormal contact information detection method, server and system, which relate to the technical field of communications. The method comprises: acquiring contact information provided by a terminal; determining whether a pre-set communication attribute parameter in the contact information is an abnormal attribute parameter; if the parameter is the abnormal attribute parameter, then generating a target filtering rule indicating a parameter characteristic of the abnormal attribute parameter according to the abnormal attribute parameter; adding the target filtering rule to a rule base, so as to obtain an updated rule base; and sending the updated rule base to the terminal, so that the terminal detects abnormal contact information. The present invention solves the problems of a relatively low accuracy rate and relatively low efficiency when abnormal contact information is detected, achieves the effect of improving a detection accuracy rate and detection efficiency, and is used for detecting abnormal contact information.