Data pertaining to the group was published on the “publishing platform” of the hacker collective LockBit 3.0, the French defense and technology company Thales confirmed on Friday.
The information was made public on November 10, according to Thales, a provider of cutting-edge solutions for the military, aerospace, transportation, and digital security.
At this time, Thales is able to vouch for the fact that its IT systems have not been breached.
It said there is currently no impact on its operations.
The group’s experts have identified one of two likely sources of the data theft and continue to investigate the second, it said. It is also working to minimise the potential impact.
The firm said on Tuesday it had opened an internal investigation and informed the ANSSI national cyber security agency.
Thales said this week that the Russian-speaking extortion and ransomware group had claimed to have stolen some of its data, with plans to publish it on Nov. 7.
Its shares, which dropped as much as 8.5%, were the worst performers on France’s large- and mid-cap SBF 120 index.