Schneier's Law
Version 1.0.0 · Updated 2026-07-30
CORE DEFINITION
“Anyone can invent a security system that they themselves cannot break.” This does not mean the system is secure, only that it appears secure to that person. True security must undergo public, third-party, and prolonged attack testing.
SCAFFOLDING EFFECT
Reduce cognitive load
The blind spot of self-congratulation. Do not trust “self-created exclusive theories” or “self-developed encryption algorithms.” In the intellectual domain, if it has not undergone peer review and attack testing, so-called “unbreakable” systems are often merely because the designer is too incompetent to see the flaws.
Anchor fast decisions
Bruce Schneier proposed: anyone can design a system that they themselves cannot break, but this does not prove the system is secure; it only indicates that the designer cannot see the vulnerabilities. True security requires public, long-term, third-party attack verification.
MINIMUM ACTION
In progress 0/3Practice this model in one real situation:
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Source support: Explicit
- en.wikipedia.orghttps://en.wikipedia.org/wiki/Bruce_Schneierverified
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