Hacking requires intent in most jurisdictions. We probably require a new crime of "Hacking by Negligence".
"New Jersey Administrative Code § 17:3-6.5 defines willful negligence as:
Deliberate act or deliberate failure to act; or Such conduct as evidences reckless indifference to safety..."
Now obviously that link refers specifically to injury compensation, but it's pretty easy to see how you would make a case that the actions of these companies constitutes reckless indifference to safety, whether or not they actually intended hacking to occur.