I wouldnt target the company with more than truthful words while speaking to others. If I was truly treated unfairly, It would come out with people I talk to. But to try to hack the place, get revenge, or similar, hey, if I was dissatisfied too much, there are other places to work.
Recently, My job was in jeopardy, and even when I thought that my last day was Oct. 1st, I kept doing my job just as if I was here forever. I look at it like this, I am getting paid well. Whether or not everything is perfect, the company is paying me, and I do have an option to leave if totally dissatisfied.
I have been in many positions where I have had to let someone go, and had to follow strict rules for it, including taking them offsite and telling them to wait at the lobby for their things or I would ship it to them. This is worse if it is raining and their car keys are in their jacket at the desk.
For a company, an IT specialist can do major harm. But so can many other people (finance or HR employees come to mind). But even if you do not get caught, what did you really do??? Prove to yourself that you are spoiled and have no morals.
And what is with that all of your posts say to buy an MP4 player? I dont want ads, you should place that in a relevant post, not everything that you post to.