The MetaRheinMainChaosDays (MRMCD) are an annual IT conference of the Chaos Computer Club (CCC) with a slight focus on IT security. The MRMCD have been taking place in the Rhine-Main area annually (with few exceptions due to the pandemic) since 2004. Apart from the conference program, the MRMCD provide the opportunity of exchanges with IT experts in a relaxed atmosphere. The MRMCD are located in the Robert Piloty building of the Technical University of Darmstadt.

Tickets for the MRMCD will be available later this year at low prices in our pre-sale. As usual, there will be an all-day breakfast including a coffee-flatrate for every participant.


Final Anouncement


In less than a week, we'll see each other at MRMCD in Darmstadt! Today, we want to send you a bunch of information that will contribute to us all experiencing an amazing event.


We want you to bring memories and inspiration back to your home reality, but no …

Call for Proposals has ended, Call for Participation has begun

Our CfP is over, and our content team is already hard at work creating a timetable, to make this year's event once again the best MRMCDs of all time.

But now it's your turn: Here's how you can help us make it a great conference.

For all "Engel", and those …

Last Call for Papers.

Dear friends of fact-checking,

As rumor has it, this Sunday already is the last Sunday of July and the end of the MRMCD CfP. Therefore it’s high time to create facts and submit your talks and workshops at before 23:42pm. We are looking …

Presale: Tickets are now for sale!

Dear friends of fact-checking,

we guarantee this is not fake: The sale of tickets and merch for this year’s MRMCD (“Who owns reality?”) has begun at We made five kinds of ticket available, hoping one of them matches your financial reality. We recommend you …

Who owns reality?

Between a pandemic, fake news, climate catastrophe, war and propaganda, the MRMCD 2023 ask themselves the question: Who owns reality?

Come along on a three-day journey through the (non-)realities around IT security, privacy, eGovernment, fake news, Deepfakes, Machine Learning and "AI & Copyright" or anything else that moves chaos-loving people …