Cryptography
⏱ ~3-min readAceMark Guide
What this topic is really about
Steganography conceals data within another medium (image, audio, video) so its very existence is hidden. Hashing produces a fixed-length digest, salting adds randomness to hashes, and tokenization substitutes sensitive data with non-sensitive tokens.
CIA triad: tampering breaks integrity. Confidentiality means the message cannot be read by unauthorized parties, availability means it reaches the recipient, non-repudiation means the sender cannot deny sending it.
See the mechanism
CIA triad: tampering breaks integrity. A diagram for this topic isn't available yet — the worked example below walks the same reasoning step by step.
An exam-style question, fully explained
What property is destroyed when an attacker successfully tampers with a message in transit?
- Identify what the question tests: What property is destroyed when an attacker successfully tampers with a message in transit.
- CIA triad: tampering breaks integrity.
- Confidentiality means the message cannot be read by unauthorized parties, availability means it reaches the recipient, non-repudiation means the sender cannot deny sending it.
Traps the examiner sets
- Read each option carefully — distractors on Cryptography are designed to look plausible.
- Re-check the exact wording of the question stem before committing to an answer.
- Watch the qualifiers ("always", "only", "except") that flip a correct-looking option.
Test your recall
Answer each from memory — you'll see instantly whether you're right and why.
Run a focused 10-question mini-mock on Cryptography and see it stick.
Practice more of this topic →