For files available on data networks the German Copyright Act (UrhG) is applicable without restrictions of any kind. This means especially:
Copying is permitted only for private or the own scientific purposes of the person who performs copying (according to § 53 of the German Copyright Act). Further publication or public broadcasting needs explicit authorization of the copyright owner.
Any user is responsible for complying with these regulations and can be held vicariously liable in case of misuse.
For more information, see https://rightsstatements.org/page/InC/1.0/?language=en