A Global Threat

Data breaches can take many forms, but one thing they all have in common is the sinking feeling that sets into the pit of every manager's stomach when they find that they are responsible for dealing with one.  
The first you hear of it could be a call from the tabloid press asking for confirmation of some kind of fact that could only have come from the personal data that you should have kept safe.  It could be some images, clearly from your CCTV system.  Imagine if they show a celebrity customer in your hotel with someone other than their wife?  When this hits the news, you can be sure that your next call is going to be from the celebrity's lawyers.  It could be lists of clients who have used your facility and would rather this was not made public;  you may even have signed some form of non-disclosure agreement with them that includes severe penalties for breaching of contract.
Small businesses often first find out about a data breach when their credit card facility is cancelled for no apparent reason.  Then you find that there is an unexplained pattern of your customers who have whose credit cards have subsequently been used fraudulently.  Can you operate without a credit card facility?  Could you operate with a vastly reduced floor limit?
Imagine finding that data relating to your customers' health is suddenly in the Public domain and it can be traced back to a leak in your organisation.