https://forum.defcon.org/ The Book Exchange at DEF CON, will allow for members of the community to drop off a used book that has been kindly read and may be enjoyable by someone else and in return they will be able to select a “new gently used” book from the exchange table. en Sat, 02 May 2026 14:36:33 GMT vBulletin 60 https://forum.defcon.org/images/misc/rss.png https://forum.defcon.org/