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History has taught us: never underestimate the amount of…

“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…” quote by Bruce Schneier
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“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.”

Bruce Schneier

About This Quote

This interpretation was drafted with AI assistance. It is one reading of the quote, not the author's own explanation.

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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