HAK5 Magazine is a totally free online magazine. In fact is one of the coolest magazines around and is focused on many aspects of the security world. It has very good articles and videos about the subject always with a very good explanation about every subject it proposes to explain.
Hak5 Put together by a band of IT ninjas, security professionals and hardcore gamers, Hak5 isn’t your typical tech show, take on hacking in the old-school sense, covering everything from network security, open source and forensics, to DIY modding and the homebrew scene.
Orientation: Hackers and Security Professionals
Frequency: Daily / Monthly