Books

You can find free downloadable PDF books containing the latest release versions of OWASP Guides and other documents at:

http://stores.lulu.com/owasp

Hardcopy versions of the books are also available for purchase at their printing cost. That is, OWASP makes no profit of any kind on the publishing of these books. Since the latest information from these books is always available on the OWASP website, when you're done with a hardcopy edition, please consider passing it to someone you think should have it.