Search
Contact
15.04.2021 | KPMG Law Insights

Data protection – fine of 475,000 euros for late notification of a data protection incident

Fine of 475,000 euros for late notification of a data protection incident

The Dutch data protection authority (Autoriteit Persoonsgegevens – AP) has imposed a fine of 475,000 euros on the accommodation and travel agency platform booking.com for failing to report a data protection incident in good time.

Already in 2019, hackers had managed to access the data of 4109 customers of booking.com(https://edpb.europa.eu/news/national-news/2021/dutch-dpa-fines-bookingcom-delay-reporting-data-breach_en). The data included names, addresses, telephone numbers and details of hotel bookings, as well as credit card information for 283 data subjects, including security numbers in 97 cases. The hackers gained access to the data through employee accounts at several hotels in the United Arab Emirates, presumably through “socialengineering” techniques or phishing. In addition, the hackers attempted to gain access to additional credit card data by contacting guests of the hotels via email or phone. This posed a high security risk even for those booking.com customers whose credit card data was not affected.

booking.com did not consider itself responsible for the data protection incident, as the data had not been accessed via its own IT infrastructure. The AP, on the other hand, saw evidence of shared responsibility on the part of the operator. However, the fine was issued regardless of this issue solely based on the fact that booking.com had reported the data protection incident to the affected customers only after 22 days and to the supervisory authority only after 25 days. A data breach of this magnitude should have been reported to the data protection authority pursuant to Art.33 Para.1 GDPR must be reported to booking.com at the latest within 72 hours of becoming aware of it.

The fine can still be appealed. However, booking.com has already had it stated that it will accept the fine. The booking.com database had not been compromised at any point, but the company said it was working to improve its internal processes.

What is remarkable about this fine decision is that the actual incident was not sanctioned. Rather, only the late reporting was penalized. This proves that the supervisory authorities do not only examine and sanction measures to prevent data protection incidents. Delayed reporting of incidents to the supervisory authorities and/or the data subjects also constitutes a violation in its own right and one that is subject to sanctions.

Responsible parties are therefore well advised to review their internal processes for reporting data protection incidents and ensure that any required notification can be made in a timely manner. In particular, it must be taken into account that the 72-hour period is a maximum period and – at least according to the German supervisory authorities – also runs on weekends or public holidays. Against the background of the fact-finding usually required in the company, appropriate organizational precautions must be taken for this purpose.

Explore #more

20.01.2026 | In the media

Guest article in Personalmagazin – Mobile working: Working without borders?

Mobile working from abroad opens up new opportunities for employees and employers alike. Legally, working models such as “Work from Anywhere” (WFA) or “Workation” must…

12.01.2026 | In the media

Guest article in Economy and Competition: Earnings calls under (AI) control: New starting point for the Commission’s dawn raids

Public statements made by companies in earnings calls harbor antitrust risks: In such presentations of quarterly or annual results and the subsequent discussion with analysts,…

09.01.2026 | KPMG Law Insights

EmpCo comes into force – answers to the most important practical questions

Environmental statements are becoming increasingly risky for companies. Due to the Empowering Consumers Directive (EmpCo), much stricter rules will soon apply to environmental claims and…

05.01.2026 | In the media

KPMG Law expert in the Börsen-Zeitung on the digital euro

The digital euro is set to arrive by 2029. However, the central bank still has a lot of convincing to do. There is a great…

22.12.2025 | KPMG Law Insights

New EU directive tightens environmental criminal law

Environmental crime will be punished more severely in future. Directive (EU) 2024/1203 on the protection of the environment through criminal law is being transposed into…

19.12.2025 | KPMG Law Insights

Digital Omnibus: More efficiency instead of deregulation

The EU Commission wants to streamline digital laws. On November 19, 2025, it presented its proposals for the “Digital Omnibus” (including a separate AI Omnibus).…

18.12.2025 | Deal Notifications

KPMG Law and KPMG advise the shareholders of Frerk Aggregatebau on the sale to DEUTZ

KPMG Law Rechtsanwaltsgesellschaft mbH (KPMG Law) and KPMG AG Wirtschaftsprüfungsgesellschaft (KPMG) provided comprehensive advice to the shareholders of Frerk Aggregatebau GmbH (Frerk) on the sale…

17.12.2025 | KPMG Law Insights

AI-supported risk checks of NDAs and CoCs: how legal departments benefit

Artificial intelligence can relieve legal departments of routine tasks such as checking non-disclosure agreements (NDAs) or codes of conduct (CoCs). These documents are part of…

16.12.2025 | In the media

Interview with KPMG Law experts: CSDDD after the omnibus: “Toothless tiger” or pragmatic solution?

The agreement on the Omnibus I package is causing discussion. Among other things, the thresholds for the EU Supply Chain Directive (CSDDD) have been significantly…

15.12.2025 | In the media

KPMG Law guest article in Tagesspiegel Background: What the digital omnibus means for companies today

The debate on the digital omnibus has only just begun. Companies should contribute their expertise to the ongoing process and strengthen their internal foundations –…

Contact

Sebastian Hoegl, LL.M. (Wellington)

Senior Manager
Lawyer
Specialist lawyer for IT law
LL.M. (Wellington)

Heinrich-von-Stephan-Straße 23
79100 Freiburg im Breisgau

Tel.: +49 761 769999-20
shoegl@kpmg-law.com

© 2026 KPMG Law Rechtsanwaltsgesellschaft mbH, associated with KPMG AG Wirtschaftsprüfungsgesellschaft, a public limited company under German law and a member of the global KPMG organisation of independent member firms affiliated with KPMG International Limited, a Private English Company Limited by Guarantee. All rights reserved. For more details on the structure of KPMG’s global organisation, please visit https://home.kpmg/governance.

KPMG International does not provide services to clients. No member firm is authorised to bind or contract KPMG International or any other member firm to any third party, just as KPMG International is not authorised to bind or contract any other member firm.

Scroll