Skip to content
Optus Privacy Breach Affects 51,000 Customers

Optus Privacy Breach Affects 51,000 Customers

First seen 11 Jun 2026, 06:58 UTC • •
API

Article Content

Browse articles
ThreatCluster AI
ThreatCluster •June 12, 2026 at 06:38 UTC
  • •Optus breached the privacy of 51,000 customers by publishing unlisted phone numbers.
  • •The breach occurred due to failures in communication between Optus and Telstra regarding customer preferences.
  • •Maurice Blackburn Lawyers will pursue compensation for affected individuals based on OAIC's findings.

Optus has been found to have breached the privacy of 51,000 customers by mistakenly publishing their unlisted phone numbers in the White Pages directory. This breach, which occurred between 2015 and 2019, was a result of Optus failing to communicate customer preferences regarding number listings to Telstra. The Office of the Australian Information Commissioner (OAIC) conducted a lengthy investigation, concluding that Optus held responsibility for the breach despite arguments to the contrary. The OAIC's determination allows for a representative complaint by Maurice Blackburn Lawyers, who will seek compensation for affected individuals. Customers impacted include those who ported their numbers to Optus during the specified timeframe. The breach highlights deficiencies in Optus's processes and technology over several years. The OAIC's findings will be applied to determine reasonable compensation for affected class members.

Start a free Starter trial for enhanced analysis

Ask AI about this cluster

Updated 101d ago How this analysis works

Timeline

2015-01-01
Breach occurs
Optus fails to communicate unlisted number preferences for customers who ported their numbers.
Itnews.Au
2019-01-01
Breach revealed
Optus inadvertently publishes unlisted phone numbers in the White Pages directory.
Itnews.Au
2021-01-01
OAIC investigation begins
The OAIC starts investigating the privacy breach involving Optus and affected customers.
Itnews.Au
2026-06-11
OAIC determination released
The OAIC concludes its investigation, confirming Optus breached the Australian Privacy Principle 11.1.
Itnews.Au
2026-06-11
Representative complaint filed
Maurice Blackburn Lawyers files a representative complaint with the OAIC for affected customers.
Maurice Blackburn

More articles in this cluster (3)

Following this threat?

Track Optus in your own feed — you're alerted when they show up in new reporting, leak sites or exploitation.

Free account · no card needed

Extracted Entities (5)

1 / 3