The cyberattack, believed to have been perpetrated by Russian hackers, has exposed sensitive information of both military personnel, civilian staff and defence contractors.

As reported by The i, the stolen data includes email addresses and login credentials for the Defence Gateway portal, a critical online platform used by British military personnel.

While the system itself doesn't store classified information, it is essential for internal communication, HR services and access to health records.

The majority of the affected employees are based in the UK, but a number are stationed overseas in countries like Iraq, Qatar and Cyprus, as well as mainland Europe.

Read the full article on Computing here.