This is how Constantinople fell to the Ottomans: they had very high hard to penetrate walls, but forgot to lock one gate. * Replace the walls with highly secur

This is how Constantinople fell to the Ottomans: they had very high hard to penetrate walls, but forgot to lock one gate. * Replace the walls with highly secure encryption e2e algorithm, and the gate with easily accessible backup, and you'll see why things like this are not out of scope. * - this story is disputed by some historians