See https://www.lesswrong.com/posts/8gqrbnW758qjHFTrH/security-mindset-and-ordinary-paranoia and https://www.lesswrong.com/posts/cpdsMuAHSWhWnKdog/security-mindset-and-the-logistic-success-curve for Yudkowsky’s longform explanation of the metaphor.
See https://www.lesswrong.com/posts/8gqrbnW758qjHFTrH/security-mindset-and-ordinary-paranoia and https://www.lesswrong.com/posts/cpdsMuAHSWhWnKdog/security-mindset-and-the-logistic-success-curve for Yudkowsky’s longform explanation of the metaphor.