snydeq writes: "As companies increasingly enable employees to bring their own devices into business environments, significant legal questions remain regarding the data consumed and created on these employee-owned technologies. 'Strictly speaking, employees have no privacy rights for what's transmitted on company equipment, but employers don't necessarily have access rights to what's transmitted on employees' own devices, such as smartphones, tablets, and home PCs. Also unclear are the rights for information that moves between personal and corporate devices, such as between one employee who uses her own Android and an employee who uses the corporate-issued iPhone.
... This confusion extends to trade secrets and other confidential data, as well as to e-discovery. When employees store company data on their personal devices, that could invalidate the trade secrets, as they've left the employer's control. Given that email clients such as Outlook and Apple Mail store local copies (again, on smartphones, tablets, and home PCs) of server-based email, theoretically many companies' trade secrets are no longer secret.'"