Access Control Defensive Categories and Types:

• Access Control Types (Many can be multiple types – On the exam look at question content to see which type it is).
  • Preventative:
    • Prevents action from happening – Least Privilege, Drug Tests, IPSs, Firewalls, Encryption.
  • Detective:
    • Controls that detect during or after an attack – IDSs, CCTVs, Alarms, anti-virus.
  • Corrective:
    • Controls that Correct an attack – Anti-virus, Patches, IPSs.
  • Recovery:
    • Controls that help us Recover after an attack – DR Environments, Backups, HA Environments .
  • Deterrent:
    • Controls that Deter an attack – Fences, Security Guards, Dogs, Lights, Beware of the dog signs.
  • Compensating: 
    • Controls that Compensate – other controls that are impossible or too costly to implement.