Phrack 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 cracking, the articles also cover a wide range of topics including computer and physical security, hacking, cryptography and international news.
Phrack "has had its finger on the pulse of hacker culture", and is considered both a handbook and a manifesto for hackers..
Orientation: Hackers and Security Professionals
Frequency: Weekly / Monthly