Hände auf rot leuchtender Tastatur
Translated from German with AI assistance

Warning: Data Theft via Email, SMS, and Phone

Fraudsters continue to misuse the German Chamber of Commerce and Industry (DIHK) as a cover for phishing attacks – most recently through an email with the subject "Your letter came back undeliverable." Learn more about these and other criminal approaches here.

Important: The DIHK and IHKs never ask you via email, SMS, or phone for "data updates." Do not click any links in such messages or disclose any data. Delete suspicious messages and, if necessary, contact us directly through our official channels to protect your company from data theft.

Since late 2022, emails have been circulating that claim to originate from DIHK or IHK but have fraudulent intent. These messages always request updates to corporate data; however, no links should be clicked nor data shared as these are scams.

DIHK quickly blocks relevant email addresses and domains upon discovering new scams, though this provides only short-term relief. Always remain vigilant! Scammers use increasingly sophisticated methods to extract data from companies:

10 September 2026

"Your letter came back undeliverable"

Scammers threaten deletion of corporate data from the commercial register in emails titled "Your letter came back undeliverable." The message falsely claims to provide details about registry updates that have been returned undelivered, urging recipients to update their information promptly to avoid "administrative irregularities with legal consequences." Delete this email as it is not legitimate.

25 August 2026

#Notification: Update on Contact Options

Recipients of phishing emails titled "#Notification: Update on Contact Options" should be suspicious due to several discrepancies. Scammers disguise their Hungarian email address as "#IHK:customer service assistance" and refer to outdated information linked to DIHK CEO Dr. Martin Wansleben. Any request for "database reconciliation with member data" is fraudulent; delete the email immediately!

11 August 2026

Phone call followed by an email "Legitimation"

A new scam combines a phone call with an email titled "Legitimation." Scammers claim personal data is needed for regulatory permits, followed by an email requesting ID documentation sent to the address legitimation@XXX-ihk.info. Do not comply; validate authenticity directly with IHK or regulatory agencies.

11 June 2026

Deadline until 15 June: Update your company details in the IHK company register

Scammers threaten fines in emails titled "Deadline until 15 June" that demand data updates via links. These messages come from Dutch domains ending in ".nl." Always delete such emails without clicking any links.

11 May 2026

Final notice to update your company data

In May, phishing emails masqueraded as IHK correspondence under the subject "Final notice to update your company data." Allegedly for regulatory compliance, these messages demand data submission through fraudulent portal links. Delete them immediately!

14 April 2026

FINAL WARNING: Breach of statutory obligations – 24 hours deadline

Emails in April threaten administrative fines and promote links disguised to steal sensitive data. Messages are signed by fictitious department heads. Avoid interaction and delete them promptly.

17 March 2026

Important inquiry: Delivery method for annual financial statements

Phishing attempts in March requested "urgent replies" while threatening account suspensions for non-response. Avoid engaging with these emails, as scammers aim to collect sensitive corporate information.

11 February 2026

Official notice regarding stored company information

February emails accuse recipients of neglecting "required updates," urging them to visit fraudulent online portals. Delete these emails without clicking any links.

29 January 2026

Request to update your data

An email falsely claiming to originate from Deutsche Industrie- und Handelskammer urged corporate data updates using fabricated reference numbers. These scams should be deleted immediately.

26 January 2026

Status update on company data

January emails falsely reported unfinished data updates at DIHK, providing links to phishing sites aimed at stealing corporate information. Delete these messages.

Relevant in topic:
This English version is provided for convenience only.
It has been translated with the assistance of AI.
No guarantee is made as to the accuracy or completeness of the translation.

Contact

Reppelmund, Hildegard_quad

Hildegard Reppelmund

Director Competition Law, Unfair Commercial Practices Law, Public Procurement Law, Corporate Crime Law | In-House Lawyer