Defense in Depth
Version 1.0.0 · Updated 2026-07-30
CORE DEFINITION
Do not rely on a single security line (such as a firewall), but establish multiple layers of overlapping defense mechanisms (physical, network, host, application). Assume that each layer will be breached, using layer-by-layer containment to exhaust the attacker and buy reaction time.
SCAFFOLDING EFFECT
Reduce cognitive load
Build a redundant security mindset. In personal finance or career planning, do not believe in a 'iron rice bowl' or 'all-in'. Establish multiple lines of defense (savings, insurance, side hustles, skills), acknowledge that lines will be breached, and aim for system survival rather than absolute security.
Anchor fast decisions
Do not rely on a single line of defense, but build multiple layers of overlapping defense (physical, network, host, application). Assume each layer will be breached, using layer-by-layer containment to exhaust the attacker and buy reaction time. Acknowledge that lines will be breached, and aim for system survival rather than absolute security at a single point.
MINIMUM ACTION
In progress 0/5Practice this model in one real situation:
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Source support: Explicit
- en.wikipedia.orghttps://en.wikipedia.org/wiki/Defence_in_depthverified
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