NTTPC Communications: part of the servers behind its "WebARENA" large-file transfer function were breached and the function was stopped; it is expected to resume around December 2026

Traces of unauthorized access by a third party to part of the servers behind the large-file transfer function have been confirmed from this date. [1] [2]

From late at night, communications thought to be an external attack occurred on and off, so it blocked access to the server and stopped the function. [1] [2]

It announced the stoppage and its findings. It aims to resume the service around December 2026. [1] [2]