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Attacks exploiting a vulnerability impacting JetBrains TeamCity continuous integration and deployment servers, tracked as CVE-2023-42793, have been launched by North Korean state-sponsored threat operations Diamond Sleet and Onyx Sleet, reports The Record, a news site by cybersecurity firm Recorded Future.

Two weeks after the first data leak from the DNA ancestry service, the threat actor produces an additional 4 million user records they purportedly stole.

Known threat groups Diamond Sleet and Onyx Sleet focus on cyber espionage, data theft, network sabotage, and other malicious actions, Microsoft says.

Several countries in Europe as well as the United States and Japan were involved in the operation, which is aimed at defanging one of the bigger names in ransomware.

Researchers with Symantec’s Threat Hunter Team believe that Iranian-linked groups have been conducting cyber operations to gain intelligence on sensitive foreign policy decisions.