Phrack is an underground ezine written by and for hackers first published November 17, 1985. Described by Fyodor as "the best, and by far the longest running hacker zine, the magazine is open for contributions by anyone who desires to publish remarkable works or express original ideas on the topics of interest. It has a wide circulation which includes both hackers and computer security professionals.
Originally covering subjects related to phreaking and telephone system hacking, anarchy and kracking, the articles also cover a wide range of topics including computer and physical security, hacking, cryptography and international news. It is considered both a handbook and a manifesto for hackers.
In 2005, it was announced that Phrack was to come to an end, with the 63rd issue as its last. To commemorate Phrack's final appearance, this issue was to be a hardback edition, released simultaneously at the DEF CON and What the Hack conventions on July 29. An e-zine version of the release followed on August 1. The European printer for the hardcopies of Phrack to be distributed at DEF CON refused to fulfill the order once they realized that they were printing a Hacking book. Two University of Arizona students filled the gap and printed 200 copies of Phrack in time for the convention.
Issue 63 told readers to "expect a new release," and on May 27, 2007, issue 64 was released by a new, younger generation of editors referring to themselves as "The Circle of Lost Hackers." (TCLH).. TCLH eventually released issue #65 of Phrack on April 11, 2008.
Phrack is especially popular due to the general high standard of the releases compared to other underground zines, but has made its reputation from a number of high-quality articles.
Several regular columns are present in most issues of Phrack, such as: