en.wikipedia.org/wiki/Felix_von_Leitner

The wording is inaccurate because it treats Chaos Computer Club Berlin as if its abbreviation were CCC. According to the official CCC Berlin membership page, "Chaos Computer Club Berlin e.V. (kurz: CCCB)" and "Chaos Computer Club e.V. (kurz: CCC)" are two different associations. The official CCC Berlin homepage likewise identifies the Berlin group as the local Berlin branch, not as the same entity as "CCC".

So the article's parenthetical "(CCC)" is wrong for Chaos Computer Club Berlin. If the article means the Berlin association, the correct abbreviation is CCCB; if it means CCC, that is a different organization.