Cisco Certified Support Technician (CCST) CybersecuritySecurity PrinciplesEasy
A manufacturing plant relies heavily on its industrial control systems (ICS) for production. An unexpected cyberattack causes these systems to shut down for several hours, leading to significant production losses. The primary security principle that was compromised in this scenario is:
- ANon-repudiation
- BConfidentiality
- CAvailability
- DIntegrity
Show answer & explanationAnswer & explanation
Correct answer: C. Availability
Availability ensures that authorized users can access systems and data when needed. The shutdown of industrial control systems, preventing production, directly compromises the availability of critical systems.
Why the other options are wrong
- A. Non-repudiation ensures that an action or event cannot be denied.
- B. Confidentiality prevents unauthorized disclosure of information.
- D. Integrity focuses on preventing unauthorized modification of data.
Availability
The security principle that ensures authorized users can reliably access information and systems when needed.
- Part of the CIA Triad.
- Often targeted by Denial of Service (DoS) attacks.
- Achieved through redundancy, backups, and disaster recovery planning.
Memory trick: CIA: C for 'Can't see it', I for 'Intact', A for 'Always there'