If you want to reach Jim Walden by email, you’ll have to ping him at work. Three months ago, he ditched his personal email account because he was concerned about the security implications. Unlike some professionals, Walden never emailed confidential documents to his home account. His concern was that his own personal information that could possibly be maintained on a server outside his control. In short, Walden actually practices what he preaches: Maintain vigilance with home security applications. Practice safe computing.