https://blog.torservers.net/20180704/coordinated-raids-of-zwiebelfreunde-at-...
https://www.ccc.de/en/updates/2018/hausdurchsuchungen-bei-vereinsvorstanden-...
"The board members of the association are not considered suspects but witnesses in the ongoing investigation."
"Just to recap: The mere presence of an e-mail address at a large free provider on a website has caused law enforcement authorities to deduce that a German association that helps raise funds for this provider must be connected to this website somehow."