Labor has accused the Coalition government of failing to take online security threats to Australian consumers seriously, by stalling legislation it previously supported to govern the way companies must disclose details of privacy breaches.

In March, parliamentary secretary to the shadow attorney-general Lisa Singh proposed legislation to make it ­compulsory for corporations and ­government to notify people if their ­privacy was breached and personal details compromised, but she said a lack of government support meant it was unlikely to succeed.