It's worth noting that Black Hat was spun off from Def Con to get corporations to allow employees to expense it. Often speakers at Black Hat also present at De

It's worth noting that Black Hat was spun off from Def Con to get corporations to allow employees to expense it. Often speakers at Black Hat also present at Def Con. Def Con as a matter of policy does not collect any information about its attendees [0]. [0] Read the fine print: https://media.defcon.org/DEF%20CON%2026/DEF%20CON%2026%20receipt.pdf https://media.defcon.org/DEF%20CON%2026/DEF%20CON%2026%20rec...