That's almost out of the CEH handbook! For most webmasters (the membership here at sitepoint), they don't need to worry about the security of a datacenter thousands of miles away.
IT professionals, however, do! The most common attack on a company's IT assets are by disgruntled employees (Tip: Keep all your employees "gruntled!") and "social engineering" is the easiest way to gain access to physical sites as well as usernames and passwords, etc.
Remember: Security. Indeed, it is the three edged sword with cost, convenience and security the edges. Making the trade-offs necessary is the job of management guided by its IT team.