In the chain of business security, humanity is the weakest link.
Even with the most stringent and sophisticated suite of protection, the risk of your business-critical data being stolen is ever present, especially if your employees are unaware (or even worse, apathetic) of the security risk they pose. Precautions can be made against data breaches. Devices and systems can be safeguarded from outside attack.
Despite this, every business owner should always consider the human factor as the most important one in data protection.