[haswell]

> Except his old knife he already had with him isn't made for exploiting the flaw in the vest, so it doesn't work.

This seems like an unnecessary constraint to bolster your point instead of actually addressing what the other person is saying.

In this analogy, why can’t the old knife exploit the flaw? If the problem with the vest allows a sharp implement through the material when inserted at the correct angle or in the correct place, any sharp object should do.

To bring this back to the real world, this is all unfolding in virtual/digital spaces. The attacker doesn’t need to physically go anywhere, nor can potential victims easily leave the store in many cases. And the attacker often needs very little time to start causing harm thanks to the landscape of tools available today.