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The metaphor of plugging holes in a wedge of swiss cheese is actually the basis for the aviation industry's security model! https://en.wikipedia.org/wiki/Swiss

• JohnJamesRambo 4y ago
  This is really neat and novel to me, thanks for sharing.
  • bombcar 4y ago
    The IT version of it is sometimes called "defense in depth" - even if each individual layer has weaknesses, combining them gets something stronger. This often doesn't apply in cryptography; where adding two separate functions may result in a system that is actually weaker to attack.
    • rob74 4y ago
      Well yeah, if you put two slices of Swiss cheese side by side instead of on top of each other, you have given the attacker a wider choice of holes...
• rob74 4y ago
  It's more a risk management model than a security model. It tries to build a safe system from layers that are not 100% safe (e.g. because components on a plane may fail or people may not follow procedures exactly). That's why in an airplane accident it's not usually one single cause, but a whole string of things that have gone wrong. But still, we should try to keep the holes in the individual layers of cheese as small and as few as possible...