Maritime Computer Emergency Response Team ADMIRAL dataset ADMIRAL dataset

Publicly disclosed information for this event

Index Number:
Intrusion in naval systems.
Day Month Year Country Activity Incident Type
XX N/A 1999 United States Defence Intrusion


In 1999, a UK citizen confessed to illegally accessing U.S. Navy computer systems and was further suspected of infiltrating other state information systems. To address this incident, the U.S. Federal Bureau of Investigation (FBI) closely collaborated with New Scotland Yard in the UK. As a consequence of these intrusions, the individual was handed a sentence equivalent to three years on a probationary status.


US Navy

Claimed/Reported Threat Actor



Script Kiddie

Main impact



Recommendations to Defence 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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Disclaimer: the data are provided as is. France Cyber Maritime and the M-CERT take no responsibility for the soundness, quality, precision, nor the eventual attribution made by the referenced URLs. We give a lot of respect and support to the victims of attacks.
Files generated on Monday, 11th December 2023.
ADMIRAL is licensed under the Creative Commons CC-BY-NC license. Copyright © France Cyber Maritime 2023.