Cybersecurity Lexicon

CHAPTER 13

L

laboratory attack: Use of sophisticated signal recovery equipment in a laboratory environment to recover information from data storage media. SOURCE: SP 800-88; CNSSI-4009

ladder diagram: A number of control subsets provide building equipment operating limits and safety controls. A ladder diagram indicates sensing devices specifically designed to prevent the operation of the unit unless a preset number of conditions are met. The circuits are wired in series, which means all conditions must be satisfied prior to allowing the unit to operate. For chillers, some of the more common items are high head pressure, low suction temperature, ...