This is called copyleft trolling, and is a problem outside Germany as well. It's a known bug in early CC licenses, and has been fixed as of CC 4.0 . https://do

This is called copyleft trolling, and is a problem outside Germany as well. It's a known bug in early CC licenses, and has been fixed as of CC 4.0 . https://doctorow.medium.com/a-bug-in-early-creative-commons-licenses-has-enabled-a-new-breed-of-superpredator-5f6360713299 https://doctorow.medium.com/a-bug-in-early-creative-commons-... (action still required: authors need to update to CC 4.0 or later)