Phrack is the granddaddy of all the hacking sites out there,and is the world’s oldest hacker ezine,by hackers,for hacker. Described as "the best, and by far the longest running hacker zine” covers deep articles on Hacking and Cracking.A heaven for willing learners,Its articles are worth in gold.
Hakin9 offers an in-depth look at both attack and defense techniques and concentrates on difficult technical issues.Hakin9's target readers are those responsible for IT system security and Programmers, security specialists, professional administrators, as well as people taking up security issues in their free time.
When it comes to getting exploits,few sites are as comprehensive and updated as Milw0rm.Milw0rm provides a one stop platform for almost all security experts along the world to publish their new found exploits on the web so that other can study them for good or worse.
Wanna test your hacking skills ? Hack This Site puts your skills to an ultimate test as it throws you real life challenges of almost every type,Trust me,If you have it in you,visit and complete its missions and nothing can beat you.
A great collection of articles and podcasts on security,one has to visit 2600 to get a feel what hacking is.
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