Experts: the Optus hack could cost parent Singtel $420M-$560M for the 2.8M worst-affected customers; Singtel’s profit for the year ending March 2022 was $1.44B (Angus Whitley/Bloomberg)

Angus Whitley / Bloomberg:
Experts: the Optus hack could cost parent Singtel $420M-$560M for the 2.8M worst-affected customers; Singtel’s profit for the year ending March 2022 was $1.44B  —  The cost for Singapore Telecommunications Ltd. to make good customers exposed to one of Australia’s worst data breaches risks wiping …