You may have read about or been affected by the recent GawkerMedia hack. Here's a good explanation by Daniel Kennedy over at Forbes.com about how Gawker were hacked, what the hackers got and the lessons to be learned.
The key take away is there's no room for hubris in computer security. It's an on-going process. Every system is vulnerable in some way. Claiming to be un-hackable or calling into question the skills of some group or taunting them is no way to keep yours or your customer's data secure. Someone will demonstrate how wrong you are…now or later.