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ACMA Hits Optus With Maximum $826,320 Fine Over Porting Security Failures

The breaches exposed customers to SIM-swap fraud through a third-party verification flaw.

Overview

  • An ACMA investigation found 44 breaches at Optus-operated Coles Mobile in September and October 2024 after scammers bypassed identity checks in a third-party porting system.
  • At least four customers had their numbers unlawfully ported and reported bank losses totaling $39,000 through account takeovers.
  • The regulator imposed a $826,320 penalty, the maximum allowed under the anti-scam industry code, and called the lapse inexcusable.
  • Optus accepted the ruling, issued an apology, attributed the flaw to service provider Prvidr, and said the issue was fixed within 24 hours with enhanced controls.
  • The enforcement action compounds scrutiny following a fatal triple-zero outage and a separate $100 million Federal Court penalty, with an independent review led by Kerry Schott due before year’s end.