Daily Journal of Commerce, David Aman advises businesses on how best to protect access to customer lists, product details, and other proprietary data when an employee leaves. Ultimately, the best way to protect trade secrets is to establish their secrecy from the start, with the first employee hired on the first day and with every employee added thereafter."> Daily Journal of Commerce, David Aman advises businesses on how best to protect access to customer lists, product details, and other proprietary data when an employee leaves. Ultimately, the best way to protect trade secrets is to establish their secrecy from the start, with the first employee hired on the first day and with every employee added thereafter."> Protecting the Crown Jewels of the Business