Optus Data Breach Exposes Up to 9.8 Million Customers' Details

Edward Kost
Edward Kost
September 26, 2022

Cybercriminals believed to be working for a criminal or state-sponsored operation breached Optus' internal network, compromising personal information impacting up to 9.8 million customers. According to Optus CEO Kelly Bayer, the oldest records in the compromised database could date as far back as 2017.

Personal information included in this compromised data set includes:

  • Names
  • Birth dates
  • Addresses
  • Phone numbers
  • Passports and driver's license numbers (in some cases

Cyberriminals accessed the customer database through an unsercure API exposed to the public. This very basis cybersecurity oversight upturned Optus' original claim that the cyberattack was highly sophisticated.

Is your organization at risk of a data breach? Click here to find out >

Keep Learning about the Optus Data Breach

How secure is Optus?

Optus is one of the largest telecommunications companies in Australia.
  • Check icon
    View our free preliminary report on Optus’s security posture
  • Check icon
    13 risk factors, including email security, SSL, DNS health, open ports and common vulnerabilities
Security ratings
Abstract shape
Deliver icon

Sign up for our newsletter

Stay up-to-date on everything UpGuard with our monthly newsletter, full of product updates, company highlights, free cybersecurity resources, and more.
UpGuard customer support teamUpGuard customer support teamUpGuard customer support team

Protect your organization

Get in touch or book a free demo.
Free instant security score

How secure is your organization?

Request a free cybersecurity report to discover key risks on your website, email, network, and brand.
  • Check icon
    Instant insights you can act on immediately
  • Check icon
    Hundreds of risk factors including email security, SSL, DNS health, open ports and common vulnerabilities
Website Security scan resultsWebsite Security scan rating