Unattackable used in a sentence

Unattackable in a sentence as an adjective

I will make secure firewalls, safe and unattackable, which, entering among the hackers with their utilities, there is no body of crackers so great but they would break them.

There is literally no amount of armor in the world that can create an unattackable battlefield-security architecture, which is the whole reason why militaries rely on camouflage.