Important Notification

HARTE-BAVENDAMM Targeted by Cyberattack – IT Systems Restored

Hamburg, 13th January 2026

HARTE-BAVENDAMM Rechtsanwälte PartG mbB was targeted by a ransomware attack on January 7, 2026. As a result, our company data was temporarily encrypted.

We immediately initiated all necessary measures and promptly rebuilt our IT infrastructure. With the support of our IT team, we were able to restore all data within 24 hours in a secure IT environment, allowing normal business operations to resume the following day.

Our website www.harte-bavendamm.de, our telephone system and our email server were not affected by the attack.

The protection of your data is our highest priority. At present, we have no indications that the targeted attack on our servers has resulted in an increased risk of malware being transmitted via files or emails originating from our network. At this time, there is also no confirmed evidence of data exfiltration. Investigations into this matter are ongoing. We will provide transparent updates as soon as new, verified findings become available.

In addition to the usual due-diligence measures when receiving data and emails, we recommend being particularly vigilant regarding anything that appears unusual. If necessary, please inform your IT department and ensure that suspicious emails are handled appropriately. Further information and recommended actions regarding data security can be found on the websites of the German Federal Office for Information Security (BSI).

We are currently working intensively and in close coordination with the State Criminal Police Office (LKA) and cybersecurity specialists to analyze the incident. The Commissioner for Data Protection and Freedom of Information in Hamburg has also been informed of the incident.

The complete investigation of the situation will take some time. Over the past days, this has placed significant demands on our personnel, technical, and organizational resources. We thank you for your understanding should there have been any delays in communication or in the processing of inquiries as a result.

We regret the inconvenience caused by this attack and apologize for these. Thank you very much for your understanding.

Contact for further inquiries:

Dr. Arne Lambrecht, E-Mail: a.lambrecht@harte-bavendamm.de

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