Organizations often fail to acknowledge that there is a great risk of crucial data being stolen from within the company. Various studies have shown how employees use email to send out confidential corporate information. Be it because they are disgruntled and revengeful, or because they fail to realize the potentially harmful impact of such a practice, employees use email to share sensitive data that was officially intended to remain in-house.
As the 2003 Hutton enquiry in the UK demonstrated, government officials and BBC executives were found to have used email to make disclosures that were confidential. A March 1999 PC Week article referred to a study where, out of the 800 workers surveyed, 21-31% admitted to emailing confidential information - like financial or product data - to recipients outside the company.