You're ISB, aren't you? Worst of the worst."
?Bix Caleen, to ISB Supervisor Dedra Meero
The Imperial Security Bureau, also known as the Imperial Secret Service, is a key agency of the Galactic Empire that is charged with defending it from internal threats by gathering intelligence, planning and executing inspections, carrying out interrogation and re-education operations, and eliminating security threats from within and ensuring the loyalty of citizens in the Empire.
After the disastrous Aldhani heist, ISB has more resources than they ever did to combat rebellious activities. The search for Axis continues and Director Krennic has ambitious projects...