If you can demonstrate due process and reasonable effort to secure against breaches, your doing your job. For instance with described procedures, sane defaults,

If you can demonstrate due process and reasonable effort to secure against breaches, your doing your job. For instance with described procedures, sane defaults, locked down environments ect. But if you're a CSO and have not described threatmodels, workflows, and security practices, then you've not done your job and should be held accountable for data breaches.