Patent ID: 9356920
Filing Date: 2016-05-31
CPC Classification: G06F,H04L

Claim Text:
1. A computer implemented method comprising: receiving, at a social networking system, a plurality of posts from a plurality of users of a user-provided content system, each post for display to one or more other users of the system; identifying a set of features associated with the received posts, each feature being extracted from content in one or more posts and not in a black list maintained by the social networking system; identifying a feature of the set of features based on a rate of occurrence of the feature in the plurality of posts and one or more types of actions associated with the feature; determining a level of maliciousness of the identified feature based on the one or more types of actions associated with the identified feature; requesting enhanced authentication from one or more users who generated the posts in which the identified feature occurred based on the determined level of maliciousness associated with the identified feature; determining that the identified feature is indicative of bad content based on a rate of users who passed the authentication; adding the identified feature to the black list; and blocking from display subsequent posts received in which the identified feature occurs.