From Halopedia, the Halo wiki

The CORRUPTER cryptonym indicates that a Spartan was infected by the Flood, that safeguards (such as the failsafe charges present in the Gallows VISR upgrade) have failed, and weapons of mass destruction have been authorized for use. Spartans who are not assigned to Flood containment Fireteams are ordered to uphold Emergency Contact Protocol Upsilon, and withdraw to a security perimeter. CORRUPTER further dictates that containment is set as a top priority and allows for an immediate bombardment of the area with Magnetic Accelerator Cannons and fusion warheads.[1][2]


  1. ^ Halo: Official Spartan Field Manual - PART 09: ALIEN FACTIONS, The Flood, page 175
  2. ^ Halo Waypoint, Canon Fodder - Of Protocols and Prisons (Retrieved on Mar 7, 2022) [archive]