A startup with deep roots in the National Security Agency has developed something somewhere in between. Trinity Cyber acts as a sort of benevolent man-in-the-middle managed security service that sits on Layer 2 at the gates of the enterprise network, inspecting and scrubbing incoming and outgoing malicious traffic without alerting the bad guys. The startup’s out-of-band service works within a private cloud operating at Layer 2 with no connection to the public Internet or a routing address. The security service also can secretly mess with attackers by letting them believe their exploits are working.”]