https://events.ccc.de/en/2007/12/13/23c3-documentation-video/
23C3 Documentation Video - CCC Event Blog
documentationvideoccceventblog
https://tim.pritlove.org/2006/12/06/23c3-blogging/
23C3 Blogging | The Lunatic Fringe
Dec 6, 2006 - As some have noticed, the CCC Events Blog has finally taken up steam to cover the upcoming 23rd Chaos Communication Congress in more detail. Expect the the...
the lunaticbloggingfringe
https://fahrplan.events.ccc.de/congress/2006/Fahrplan/events/1773.de.html
23C3: Hacking XMPP and Jabber
hackingxmppjabber