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Information Technology Security or I.T. Security is a way of protecting information from any or all threat of unauthorized access that can result to the use of information contained in a manner that is not or will not be approved by owners in ordinary circumstances. Information is sought to be protected because there is great danger in allowing critical information in the hands of people who have less than noble intentions for accessing it.

Unauthorized access of information connotes an illegitimate and usually dangerous intentions of people who purposely do it.  Attempts of these people can be thwarted by professionals trained towards this direction.  As such, there are numerous employment opportunities in the field of IT security.   

Some of the more notable jobs in the industry include the IT Crime Investigator or Forensic Expert; the Web Penetration Tester; Directory of Security, Software Developer, and Disaster Recovery Manager.  Each of this job requires knowledge, expertise, and experience to be performed properly.  These people are very critical for businesses who rely on computer stored and generated information.

There will always be intruders who will seek to breach a business’ IT infrastructure.  An IT Crime Investigator or Forensic Expert perform the task of investigating attacks made and enables companies to plug the existing flaws that allowed the attack to be successful.  A Forensic Expert therefore seeks to master the prevention of intrusion.  A Web Penetration Tester is an expert in finding the vulnerabilities that makes systems susceptible to attacks.  A Director of Security needs to have business acumen and communication skills in addition to technological know-how.  Secure software is made by security-savvy software developers while a Disaster Recovery Manager take charge when a system has been attacked.