1. A non-transitory computer readable medium including instructions that, when executed by at least one processor, cause the at least one processor to perform operations responsive to potentially malicious activity, comprising: receiving an indication of the potentially malicious activity in a computer network; identifying, based on data included in the indication, at least one network account associated with the potentially malicious activity; determining, based on the identifying and further based on the data included in the indication and according to a defined policy, at least one responsive operation with respect to the at least one identified network account; and invoking, based on the determining, the at least one responsive operation, the at least one responsive operation being implemented to mitigate the potentially malicious activity in the computer network.