For ethical hacker certification, EC council is perhaps one of the best certification body that provides regognised hacker certification in the world. Lets take a closer look at the EC Council exam courseware.
Ethical Hacking and Countermeasures EC Council Exam 312 50 Student Courseware
By explaining computer security and outlining methods to test computer systems for possible weaknesses, this guide to system security provides the tools necessary for approaching computers with the skill and understanding of an outside hacker. A useful tool for those involved in securing networks from outside tampering, this guide to CEH 312-50 certification provides a vendor-neutral perspective for security officers, auditors, security professionals, site admistrators, and others concerned with the integrity of network infrastructures. Complete coverage of footprinting, trojans and backdoors, sniffers, viruses and worms, and hacking Novell and Linux exposes common vulnerabilities and reveals the tools and methods used by security professionals when implementing countermeasures.