The Attacker Only Has to Be Right Once

You have to defend everything.
They only have to find one thing.

That's the asymmetry.
That's the whole game.

So you don't chase the clever exploit.
You close the obvious doors first.

Most breaches aren't genius.
They're patience meeting a small oversight.

Assume they're already looking.
Then build like it's true.

– Serguey Asael Shinder