Maritime Computer Emergency Response Team ADMIRAL dataset ADMIRAL dataset

Publicly disclosed information for this event

Index Number:
Customs IT system interruption.
Day Month Year Country Activity Incident Type
13 December 2011 Netherlands Port Intrusion


According to sources, on the night of 13 to 14 December 2011, there was a system outage affecting the Tax and Customs Administration's computer system, a critical system for reporting import and export goods and allowing the logistic procedures to follow smoothly.

As a result of the system's unavailability, ships and trucks were immobilized, causing business transactions and movements within the port to be temporarily suspended.


Port of Rotterdam

Claimed/Reported Threat Actor




Main impact



Recommendations to Port to reduce Intrusion risks:

  • Implement strong access controls and authentication mechanisms to limit unauthorized access, such as Multi Factor Authentication.
  • Regularly update and patch software and systems to address known vulnerabilities.
  • Use Network Intrusion Detection Systems (NIDS) to monitor and block suspicious activities.
  • Segment your network to limit lateral movement by attackers in case of a breach.
  • Educate your employees about phishing attacks and social engineering tactics to prevent credential theft.
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Files generated on Monday, 11th December 2023.
ADMIRAL is licensed under the Creative Commons CC-BY-NC license. Copyright © France Cyber Maritime 2023.