The FBI dropped its suit against Apple after finding a way into the iPhone that belonged to a San Bernardino terrorist. It proves, yet again, that nothing is ever completely, totally secure.
Have you found yourself having to integrate a dozen instances of the very same SaaS product -- none of which IT knew about? You're not alone.
What happens when there's a problem an app or systems software that no one anticipated? Not you, not the app owner, not QA, not ops, not anyone.