Something lost is always in the last place you look (by
definition). It can also sometimes be in the first.
Although technology has made it possible for outsiders to
manipulate and infiltrate your company's systems and obtain
confidential and trade secret information in novel and subtle ways,
a lingering, persistent threat to a company's confidential
information and trade secret comes from unhappy employees, both
during the time of their employ and after separation.
While perhaps obvious, an employee that is struggling to get
along, who is in open conflict with his or her co-workers or
management, or is otherwise clearly dissatisfied with the company
may pose a significant—and ongoing—risk to the company
(although such an employee may simply be abrasive or irritable or
going through a hard time personally with no intention of stealing
trade secrets).