BELLSYSTEM24: unauthorized access to its Vietnamese subsidiary's servers, and client companies' customer data may have leaked

Unauthorized access to servers used by the Vietnamese subsidiary was found. [1]

The parent company announced the case and said it was investigating the extent. [2]

It published a follow-up. It said it had shut down the affected servers and kept working separated from the area that handles client companies' data. Investigation found that customer data it holds for call center work for some client companies may have leaked, and it had started coordinating with those companies. [1] [3]