Phrack is an 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. Phrack "has had its finger on the pulse of hacker culture", and is considered both a handbook and a manifesto for hackers.