Brendon Standish

Major Brendon Standish was an ONI operative. When the crew of the UNSC prowler UNSC Apocalypso discovered a deep-space Forerunner artifact, Standish, presuming it to be a Covenant weapon, tried to cover it up so that he could take the glory of uncovering whatever secrets the artifact would hold.
When Colonel Herzog started threatening to expose Standish for keeping the artifact from his superiors, Standish had him assassinated. Durga, who had been spying on Herzog, hacked into the Naval computer networks and exposed his severe breach of protocol to his superiors when Herzog's agent, Rani Sobeck was arrested.