Quiz Entry - updated: 2026.07.14
What is the difference between data, information, and knowledge?
Data is raw material, information is structured data in context, and knowledge is interconnected information held by a person.
* The D-I-K pyramid — raw Data at the base, Information (data in context) above, Knowledge at the top. *
Think of it as a pyramid with three layers:
| Level | Description | Example |
|---|---|---|
| Data | Raw, unprocessed facts — numbers, words, symbols | 42, Zürich, 2025-02-16 |
| Information | Data linked together into interpretable context | "42 employees in the Zürich office as of Feb 2025" |
| Knowledge | Networked information, internalized by a person | Understanding that the Zürich office is understaffed and needs hiring |
Why it matters for InfoSec: You must protect all three levels. Data breaches expose raw data, but the real damage comes when attackers combine data into information and derive knowledge (e.g., trade secrets, strategic plans).
Tip: Remember D-I-K bottom-up: Data is dumb, Information is interpreted, Knowledge is know-how.
Go deeper:
DIKW pyramid (Wikipedia EN) — the data → information → knowledge (→ wisdom) hierarchy and the debate over how the layers relate.