Knowledge sharing applications and their safety

The purpose of this bachelor's thesis is to describe security issues of knowledge sharing web applications. Basic terms related to the topic are defined in the theoretical part. Types of tests that can be used to verify safety of the application are described further, followed by introduction of OWASP foundation and their development and documentation projects. The project OWASP Top Ten 2013 informing about the ten most critical security threats to web application is then described in more detail. Finally, theoretical part presents knowledge sharing applications and their best-known open-source representatives. Practical part of the thesis is dedicated to penetration testing the three most widely used wiki applications. A particular testing methodology is presented, including the procedure and the results of the tests themselves. The results are commented and explained in detail and the overall security of every application is evaluated. Contribution of this bachelor's thesis is verification of security in currently most widely used knowledge sharing applications and finding their vulnerabilities. The test results together with the found insufficiencies will be sent to the developers of these applications