CRSEC-A01 was a humanoid-like droid design which was used as a base for the production of various droid models - both for military and civilian purposes - by different droid manufacturers. Full production ID for this design was droid.assassin_droid.crazed_security_a01. Like with most humanoid-shaped models, manufacturers were allowed to install wide array of internal weapons, systems and protective shileds, while droid itself was capable of using most types of blasters, rifles, autocannons and melee weapons. As its ID implicated, the design was flawed somehow, but it is unknown what was a specific reason to call it this way.
Known operators

Planet	Organization	Modification	Weapon	Equipment
Ord Mantell Ord Mantell Planet	Mantellian Separatists Mantellian Separatists Organization Planetary and Sector	Separatist Assault Droid	L3.a1.1 Rifle L3 Rifle Weapon Blaster Rifles
		Separatist Security Droid	L2.a2.1 Rifle L2 Rifle Weapon Blaster Rifles
Coruscant Coruscant Planet		Rogue Security Droid	H2.a1.1 Heavy Blaster H2 Heavy Blaster Weapon Blaster Pistols	Missile launcher
			L3.a1.1 Electroblade L3 Electroblade Weapon Melee Weapons