4. OPEN MOUTH, INSERT BOTH FEET, WITH SHOES

• Mistake maker: Dave Bixler

• Position: CISO, Siemens IT Solutions and Services

• Location: Ohio, US

• The incident: Sarcasm with the CEO

"Many years ago, during one of the last great e-mail-based virus outbreaks -- it was six or seven years ago and may have been the Anna Kournikova virus -- I was wearing two hats as the information security person, and also responsible for infrastructure, including the e-mail servers. The virus outbreak had spread rapidly through all seven of our mail servers, and by the time we had a virus signature that could clean out the virus, the mail servers had ground to a screeching halt.

"We took the servers offline and were in the process of getting them cleaned up when I received a call from the CEO, asking for a status. I proceeded to explain where we were, what the impact was, and how long it would take before the servers would be back online. At the end of my explanation, he joked 'Better you than me.' Naturally, my mouth engaged well in advance of my brain and I responded with 'Well, that's what you underpay me for.'"

THE LESSON

Think before you speak.

"Fortunately, my CEO had an excellent sense of humor and I was still employed the following day."