Quiz Entry - updated: 2026.07.30
What's the difference between "Safety" and "Security" (both translate to Sicherheit in German)?
Safety protects against random, accidental harm; security protects against deliberate, adaptive attackers.
* Sicherheit splits by attack form — safety guards against non-adapting accidents (ISO 61508), security against a deliberate, adapting attacker (ISO 27001). *
| Safety | Security | |
|---|---|---|
| Protects against | accidental, unwanted events | intentional acts |
| Source | accidents, environment, nature | targeted attackers |
| Adversary behaviour | the environment does not adapt to defeat you | the attacker actively adapts to your defences |
| Field | natural sciences, defined experiments | social sciences, ever-changing |
| Example standard | ISO 61508 (functional safety) | ISO 27001 (information security) |
The key insight: gravity doesn't change its strategy when you build a bridge — but a hacker will change theirs the moment you deploy a defence. That adaptiveness is what makes security uniquely hard.
Tip: German collapses both into "Sicherheit", which is why English terms are often borrowed to disambiguate.
Go deeper:
Functional safety (Wikipedia) — the safety side: protection from random and systematic failures where the environment does not adapt.- ISO/IEC 27001 (Wikipedia) — the security-side counterpart standard for managing deliberate information-security threats.