Anne Fisher, Editor of New York's Executive Inbox wrote: "Can you recognize a potentially disastrous breach of your computer systems security when you see it? Lets find out with two quick questions. First, consider this one: You receive a sternly worded email from the Better Business Bureau, saying a customer has filed a complaint against you that could result in a cancellation of your BBB rating if you dont respond within seven days. The complaint, with an official-looking ID number, is attached. Do you click on the link? Now the second scenario: An old friend (say, your college roommate) or a current business contact (maybe your favorite client) sends you an invitation to join his or her network on LinkedIn. Youd be delighted! But do you click on the link in the email? Read the whole column here