UK Ministry of Defence data breach: Impact, risks & legal response

In early 2024, a major cyber-attack compromised a payroll system used by the Ministry of Defence (MoD), exposing the personal data of current and former members of the UK’s Royal Navy, Army, and Royal Air Force. The breach has raised serious concerns over data protection, and the safety of those affected. 

How did the MoD data breach happen? 

A cyber-attack targeted SSCL – a third-party contractor that runs the MoD’s payroll and manages salary payments for UK military personnel. While the system was outsourced, the MoD remains ultimately responsible for ensuring the security of its sensitive information. 

According to media reports, UK government sources suspect China was behind the hack. China denies the allegations. While official investigations are ongoing, this alleged foreign involvement has sparked geopolitical concerns. 

Who was affected by the MoD cyber attack?  

The MoD has not disclosed the exact number of individuals impacted, but those affected are said to include: 

  • Current and former military personnel from all branches of the armed forces. 
  • Individuals in highly sensitive roles, where anonymity is crucial to their security. 
  • Potentially, high-ranking officers or intelligence-linked personnel whose data exposure could pose national security risks. 

What data was compromised?

While the full scope is yet to be confirmed, the breach likely exposed: 

  • Names and personal identifiers 
  • Payroll information 
  • Some home addresses  

 

According to one data protection lawyer, “Thousands of serving soldiers and veterans have been caused distress by how this has been handled.” 

What happens next? 

The MoD is under pressure to clarify the extent of the breach and provide support to affected individuals. Meanwhile, legal action is being pursued on behalf of those impacted, arguing the government failed to adequately protect personal and military-sensitive data.  

According to reports, more than 5,000 individuals have expressed an interest in joining a claim with just one law firm.  

If you think you may be affected by the Ministry of Defence data breach, you could be due compensation. Check your eligibility using our simple online tool today. 

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