19. The medium of claim 16 , further comprising: comparing the normalized risk score for the social entity to a risk threshold; determining that the normalized risk score exceeds the risk threshold; and responsive to determining that the normalized risk score exceeds the risk threshold, initiating a security action.
19. The medium of claim 16 , further comprising: comparing the normalized risk score for the social entity to a risk threshold; determining that the normalized risk score exceeds the risk threshold; and responsive to determining that the normalized risk score exceeds the risk threshold, initiating a security action. 20. The medium of claim 19 , wherein the security action comprises alerting a user to a risk posed by the social entity.