Able Quote by Bruce Schneier
“History has taught us: never underestimate the amount of money, time, and effort someone will expend to thwart a security system. It's always better to assume the worst. Assume your adversaries are better than they are. Assume science and technology will soon be able to do things they cannot yet. Give yourself a margin for error. Give yourself more security than you need today. When the unexpected happens, you'll be glad you did.”
About This Quote
Source Book: Secrets and Lies: Digital Security in a Networked World by Bruce Schneier, 2000
Adversaries will invest heavily to break security; assume they are more capable and plan with generous margins.
In simple terms: Expect attackers to be strong and over‑estimate threats.
Key Takeaway
Build security with extra buffers and anticipate worst‑case scenarios.
Themes
security
risk management
strategy
Mood
pragmatic
cautious
Type
strategic
technical
When to use this quote
- software development
- network architecture
- incident response
- policy planning
Key Concepts
adversarial thinking
margin of error
future tech
Questions to Reflect On
- How much margin of error is realistic for your systems?
- What trade‑offs exist between security and usability?
A Different Perspective
Over‑preparing can waste resources if threats are overestimated.
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