Customer data most popular stolen item for departing workers

An article in the Out-Law News entitled Customer data most popular stolen item for departing workers, claims industry survey refers to a survey that found a significant % of workers would take electronic and customer information with them when they leave a job.   The figures should perhaps be taken with a bit of skepticism, as the company doing the survey offers tools to monitor and control employee access. Nonetheless, it is important to recognize that a significant number of privacy breaches, and leaking of confidential information, are internal - whether that be from a system issue, human error, or an intentional action. 

We can't just focus on preventing external access.