Medibank updates incident report; customer data also affected

Medibank has provided yet another update on the ransomware attack previously noted on this site:

There has been a further development in Medibank’s cybercrime event, which is subject to a criminal investigation by the Australia Federal Police (AFP).

It has become clear that the criminal has taken data that now includes
Medibank customer data, in addition to that of ahm and international student customers.

This is a distressing development and Medibank unreservedly apologises to our customers.

Here is what we can update

We have received a series of additional files from the criminal. We have been able to determine that this includes:

* A copy of the file received last week containing 100 ahm policy records
– including personal and health claims data
* A file of a further 1,000 ahm policy records – including personal and
health claims data
* Files which contain some Medibank and additional ahm and international student customer data

Given the complexity of what we have received, it is too soon to determine the full extent of the customer data that has been stolen. We will continue to analyse what we have received to understand the total number of customers impacted, and specifically which information has been stolen.

We have taken the step of making this announcement as we believe it is
important to notify our customers of this development.

As we continue to investigate the scale of this cybercrime, we expect the
number of affected customers to grow as this unfolds.

What we are doing now

Medibank is assisting the AFP in its ongoing investigation.

Today we will announce a comprehensive customer support package, which will include:

* 24/7 mental health and wellbeing support
* Support for customers who are in uniquely vulnerable positions
* Access to specialist identity protection advice with IDCARE for all
customers

Read the full update and more about their customer support offers on their website.

October 25: There’s an update to their update. DataBreaches has learned that Medibank now states that the threat actor(s) had access to: all ahm customers’ personal data and significant amounts of health claims data, all international student customers’ personal data and significant amounts of health claims data, and  all Medibank customers’ personal data and significant amounts of health claims data. They have not named the threat group involved.