According to Singtel, there is no evidence that this attack is linked to the other attack experienced by Optus.
The Dialog Group, an Australia-based IT services consulting company, which was acquired by Singapore Telecommunications (Singtel) subsidiary NCS, has been hit by a cybersecurity attack, where company data was leaked.
The leak has potentially affected fewer than 20 of Dialog’s customers and 1,000 current Dialog employees as well as former employees.

