A system and method for active remediation and/or passive protection against cyber attacks includes an active remediation and passive protection server computer for monitoring at least a portion of network data between at least one first network and at least one second network to detect one or more attacks and/or unauthorized access to at least one first agent in the at least one first network by at least one second agent in the at least one second network. The active remediation and passive protection server computer executes at least one of (i) one or more active remediation mechanisms to actively respond to the one or more detected attacks and/or unauthorized access and (ii) one or more passive protection mechanisms to passively protect against the one or more detected attacks and/or unauthorized access.