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Arnold Clark Admits Cyber Attack Linked to Data Protection Failures

Arnold Clark Admits Cyber Attack Linked to Data Protection Failures

First seen 20 Oct 2026, 15:52 UTC • •
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ThreatCluster AI
ThreatCluster •October 20, 2026 at 16:14 UTC
  • •Arnold Clark admitted failures in data protection led to a December 2022 cyber attack.
  • •15,000 customers are involved in a group legal action due to the data breach.
  • •Sensitive personal information, including banking details, was compromised.

Arnold Clark has formally acknowledged that its inadequate data protection measures led to a cyber attack in December 2022, which compromised customer data. The company has accepted liability for compensating affected customers, with a judge approving a group action involving 15,000 motorists. The breach exposed sensitive personal information, including names, addresses, and banking details. Arnold Clark's admission highlights significant failures in their data security practices, which breached data protection laws. Customers affected by the breach are encouraged to join the legal action as time limits apply. The attack prompted the company to shut down its computer network on Christmas Eve 2022, with customer notifications issued in early 2023. Legal proceedings are ongoing, with individual claims yet to be decided.

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Timeline

2022-12-23
Cyber attack occurred
Arnold Clark's network was attacked, leading to a data breach that compromised customer information.
The-Gazette
2023-01-01
Customers notified of breach
Arnold Clark began contacting customers about the data breach and the information compromised.
The-Gazette
2026-10-20
Arnold Clark admits liability
The company formally acknowledged its data protection failures in court, allowing for compensation claims.
The-Gazette

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Common questions

What types of data were compromised?
The breach involved names, addresses, dates of birth, vehicle details, National Insurance numbers, and banking information.
How many customers are affected?
Approximately 15,000 customers are involved in the group legal action against Arnold Clark.
What steps should affected customers take?
Affected customers should join the legal action as soon as possible, as there are time limits for claims.