NRZ reports (translation):
The FUNKE media group, to which this website belongs, was the victim of a hacker attack on Tuesday. Numerous computer systems throughout Germany were affected – including our editorial offices and printing houses.
The newspapers of the FUNKE media group can unfortunately only appear with an emergency issue on Wednesday. To ensure that all readers continue to receive comprehensive information, we have deactivated our paywalls and released our e-papers. There you can read the otherwise paid content for free.
Read more on NRZ.
h/t, @Chum1ng0