Threat actors affiliated with the Russian Foreign Intelligence Service (SVR) have targeted unpatched JetBrains TeamCity servers in widespread attacks since September 2023.
The activity has been tied to a nation-state group known as APT29, which is also tracked as BlueBravo, Cloaked Ursa, Cozy Bear, Midnight Blizzard (formerly Nobelium), and The Dukes. It’s notable for the supply chain