Once I've developed a tool that replaced a couple of employees for a (client) company. In another occasion, I was assigned to a project that I didn't find moti

Once I've developed a tool that replaced a couple of employees for a (client) company. In another occasion, I was assigned to a project that I didn't find motivating at all, so my plan was to "slack off" and work on my own stuff as much as possible. The only question was how much did I have to work to make the management believe I was giving it my 100%. There was another member in the team, who was a great guy but an average dev, and I realized that I could easily make 2x more progress than him in the eyes of the managers and still have almost half of the day "free", so that is exactly what I did. Later I got a bonus for my "hard work". But the one I regret the most is installing keyloggers on several computers in high school (msn era) and obtained passwords for most of my classmates. At least I was careful enough and didn't tell anyone at the time.