2600: The Hacker Quarterly is a quarterly American publication that specializes in publishing technical information on a variety of subjects including telephone switching systems, Internet protocols and services, as well as general news concerning the computer "underground" and libertarian issues. The magazine is published and edited by its founder Emmanuel Goldstein (a pen name of Eric Corley and allusion to George Orwell's Nineteen Eighty-Four) and his non-profit company 2600 Enterprises, Inc. This volume includes several intersting topics like Understanding Web Application Security, Avoiding Internet Filtering, Bypassing Firewalls and Web Filters, and many others...