Have you ever hated your working environment? Or wanted to get back at your boss? I have certainly encountered several working environments and several bosses that I would not spit on if they were on fire. Computers and IT are wonderful things to work with; it's such a pity that human beings get in the way, with their petty grudges and selfish behaviour, inadequate management and unfair favouritism.

Apparently, a growing popular method of revenge against a poorly perceived working environment or a hated manager in the IT world is for a disgruntled worker to hack the network from the inside. If you think about it, it makes a lot of sense. Security defences are more often than not tailored to expect an attack from the outside, completely overlooking the potential for damage from the inside, which may be many times more deadly. Employees who are trusted with restricted access to important company systems or data are in the perfect position to destroy important files, or to steal and publish client information, and so forth. If you, as an employer, are not concerned about this, then you need your head examined.

A study by the Department of Homeland Security has revealed that out of dozens of computer sabotage cases in the last six years, much damage was done by trusted insiders who decided to turn to sabotage to get revenge.

Hacks could come from staff who were angry over disciplinary actions, missed promotions or layoffs.

According to Cnet.com, which published the report, favourite attacks included deleting data, or sticking pr0n on the boss's computer.

An unidentified employer told researchers that he thought something was up with one bloke who turned saboteur, but attributed the behaviour to the worker being a "weird tech guy." With a boss with that sort of attitude, it makes you wonder why the employee felt the need to shut down the company's communications for two days.