Define the boundary explicitly
A good scope enumerates what is in — domains, IP ranges, accounts — and treats everything else as out by default. Fail-closed means the absence of permission is a hard stop, not a judgement call.
Why default-deny matters for autonomy
An autonomous engine will find the path out of scope faster than a human would. Fail-closed enforcement guarantees it never takes that path, no matter how exploitable it looks.
See it on your own surface.
Book a live run and watch Cybörü prove what's exploitable.
Test Your Security