For more information or to register, head over to here: http://blackhat.com/html/bh-us-12/training/courses/bh-us-12-training_social_engineer_toolkit.html. You’ll also get a free Teensy device that we’ll be programming during the class! If you are a penetration tester, or wanting to get into it.. This is your course. Learn how to write your own modules, customize your own attacks, build your attack off your company and have a high level of success.

Info
http://www.secmaniac.com/blog/2012/02/15/blackhat-training-on-the-social-engineer-toolkit/

The Nessus vulnerability scanner is available as a stand-alone network scanner, as a subscription service or as a closely integrated scanning component of SecurityCenter.

Download
http://www.nessus.org/products/nessus/nessus-download-agreement

FAQ
http://www.nessus.org/products/nessus/nessus-faq