More and more valuable information The increasing amount of the accumulated and processed data makes the data security one of the key question for any organization. The data stored, belonging to a company are more and more often exposed to negative actions, for example they can bedestroyed, counterfeited or stolen. That's why data security is not only a necessity due to legal regulations - it can become a source of competition supremacy. The Internet development as well as the continual companies IT development caused numerous incidents connected with data security violence. The hackers' attacks, computer viruses, industrial espionage are just a few examples of intrusive actions, which expose the organizations to the their reputation as well as to financial losses. Thus data security is becoming a great challenge for managers. They are forced to use more and more advanced tools and solutions to comply with the evaluating business demands. Though,....