Actually this is no longer true. Last year DefCon recently changed this policy because they kind of recognized the world has kind of changed and moved in a pre

Actually this is no longer true. Last year DefCon recently changed this policy because they kind of recognized the world has kind of changed and moved in a pretty fundamental way and maybe it wasn't the most valid thing anymore. There's still some sorts of "it's not super cool to take pictures of specific people" vibe going on, but it's definitely no longer a "no pictures allowed" type of situation.