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Multiple choice › Security concepts (CIA)

Security concepts (CIA)

1. Security concepts (CIA)

Which security concept is breached when a hacker silently changes the balance stored in a bank's database?

  1. Availability
  2. Authentication
  3. Confidentiality
  4. Integrity
Answer

D

Integrity means data is accurate and has not been altered without authorisation. Confidentiality is about unauthorised reading; availability is about access when needed.

2. Security concepts (CIA)

A denial-of-service attack floods a company's web server so genuine customers cannot load the site. Which security concept is primarily attacked?

  1. Availability
  2. Accountability
  3. Confidentiality
  4. Integrity
Answer

A

Availability = authorised users can access the system when needed. DoS attacks target availability.