The saying that stuck with me was "defenders have to be right 100% of the time, while attackers only have to be right once".

You are suggesting this isn't correct?

> a defender gets to pick the surface area

What do you mean? You don't pick what you need to defend. Unless you choose not to build a feature. But that's a product design choice... Not a cybersecurity strategy.

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sudosysgen 3 hours ago | parent [-]

> "defenders have to be right 100% of the time, while attackers only have to be right once"

If you have an adaptive system that can react to attacks flexible (say, your own AI agent), then no, that's not correct. It is correct in the classical conception of cybersecurity where the defender is basically static.

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pastel8739 2 hours ago | parent [-]

Doesn’t this “adaptive system” just become part of the static defense? The same way that a bit of code that checks passwords against a db is “dynamic”, the options are either to beat the dynamic system (guess/phish a password, trick the AI) or find a way around it (use “forgot your password”, find a place that isn’t covered by the endpoint protection feeding the AI). I don’t see how inserting an agent somewhere fundamentally changes anything

	▲	sudosysgen 2 hours ago \| parent [-]
		It changes how many attempts you get until the attack surfaces changes to react to a failed attack, and it does so in a way that is not predictable to the attacker.