Group-IB dubbed the campaign “ColunmTK” based on the names of command-and-control (C2) server domains that were used for facilitating communications with the compromised systems. Air India disclosed a data breach affecting 4.5 million of its customers over a period stretching nearly 10 years in the wake of a supply chain attack directed at its Passenger Service System (PSS) provider SITA earlier this February. The Air India data breach involved personal data registered between Aug. 26, 2011, and Feb. 3, 2021.
Source: https://thehackernews.com/2021/06/chinese-hackers-believed-to-be-behind.html