The highest German tax court temporarily shut down its website after a hacker attack in connection with the "Log4j" vulnerability.
The Federal Fiscal Court (BFH) announced that the attack had been successfully repelled and stopped.
Only his website was affected.
The hackers would not have had access to the court's intranet or sensitive data from tax proceedings.
It was not yet clear on Friday when the BFH page would be reactivated.
Whoever called up the website got to read;
"Due to maintenance work on the server, our website is not available until further notice." Usually, information on the work of the court and important tax law decisions can be found there.
As early as Thursday, the state parliament of Schleswig-Holstein had taken its website offline by Christmas due to the Log4j gap.
The administration responded to the recommendation to switch off systems affected by the vulnerability, said a parliamentary spokeswoman.
Like numerous web servers nationwide and nationwide, the page should be taken offline until the necessary updates have been completed.
The Federal Office for Security and Information Technology announced the highest warning level "red" at the weekend because of the weak point.
According to information from BSI President Arne Schönbohm, there have been numerous attempts by criminals who wanted to exploit the security gap and install malicious software on the attacked servers.
According to the knowledge of the IT security company F-Secure, this also includes blackmail Trojans (ransomware), which hackers use to encrypt computer systems in order to then demand high ransom money for unlocking.