2600 is an awsome magazine. Whenever I go to B&N that's the first thing I look through. For those that don't know what 2600 is, it a hacking magazine. You'll find exploit code and ways to reverse engineering things.
http://www.2600.com/
Here is a list of the topics in the current issue:
Questions
Data Destruction, Covering Your Tracks, and MBSA
Stupid Webstat Tricks
A Randomizing WiFi MAC Address AP Hopper
Fun with the PRO-83
Getting More out of SSH
Using Tor and SSH Tunneling
Reverse Remote Access
Securing a Drive
Javascript Injection
Climbing the SonicWall
Verizon Fios - Fiber to the Home
Improving Stealth With Autoruns
SQL Exploits
Hexing the Registry
Not Working at a Call Center
Securing Your Wireless Network
The Continuing War on Spyware
Hacking Image Shack
I Am Not a Hacker
Security Pitfalls for Inexperienced Web Designers
A Peek Inside a Simple ATM Machine
How to Get Responses Through Deception
The Ancient Art of Tunneling, Rediscovered
Forging an Identity