The Security Police, or in contracted form, the Espos (or Boys-in-brown in Deal-slang), were the main force of the Corporate Sector Authority responsible for law enforcement and the defense of the CSA's territories. The name Espo was also a slang term used by smugglers to refer to members of the organization.
Espos had a reputation for brutality throughout the Corporate Sector. They were distinguished by their brown uniforms and KZZ riot armor. Armed with their riot guns and Merr-Sonn stun batons they were known to have used brutal and even fatal force against rioters and other sorts of "disobedient" beings and sometimes severe interrogative tactics. Espos also had access to heavier weaponry, such as mortars and walkers. Individuals who were convicted of political crimes within the Corporate Sector were sentenced to terms at a secret prison called Stars' End.