A system and method for providing network penetration testing from an end-user computer is provided. The method includes the step of determining at least one of a version of a Web browser of a target computer, contact information associated with an end-user that uses the target computer, and applications running on the target computer. The method also includes the steps of determining exploits that are associated with the running applications and that can be used to compromise the target computer, and launching the exploits to compromise the target computer. Network penetration testing may also be provided by performing the steps of determining an operating system of a target computer, selecting one of a group of modules to use in detecting services of the target computer, and detecting the services of the target computer.