Everyone has heard about hackers. It is commonly known that their jobs differ from system administrator jobs. However, things they do in their darkened rooms are definitely interesting and worth knowing. Many of the techniques they use are very useful in everyday administration tasks. A Hackers' knowledge is considered to be valuable, both by system creators and common users. As an IT security auditor, I know that administrators do not have to be taught how to be a hacker; it is often enough to show them one simple, but very interesting tool or technique, to change the point of view on their own IT environment. Topics covered in this session help you to feel for the hacker's role and evaluate your network from their point of view. Be careful -- this session is designed for IT and Security professionals who want to take their skills and knowledge to the next level. After this session you will be familiar with hacker techniques which can be useful to protect yourself against.