Published:
18 October 2022
Protect yourself against future threats.
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AUSCERT Security Bulletin
ASB-2022.0200.2
MyDeal Data Breach Incident
18 October 2022
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AusCERT Security Bulletin Summary
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Product: MyDeal Data Breach
Resolution: None
Revision History: October 18 2022: Received further information
October 17 2022: Initial Release
OVERVIEW
Woolworths has confirmed a security incident targeting MyDeal, a Woolworths
Group subsidiary where a compromised user credential has been used to gain
unauthorised access to the MyDeal's Customer Relationship Management
system affecting 2.2 million customer data [1][2].
IMPACT
According to the reports, MyDeal customer data which has been accessed in the
data breach includes;
Customer Name
Email Address
Phone Number
Delivery Address
Date of Birth (In some instances) [1][2]
Woolworths has confirmed that MyDeal does not store payment,
drivers licence or passport details in their CRM system and no
customer account passwords or payment details have been
accessed in this breach [1][2].
Woolworths has also confirmed that Mydeal.com.au website and app
have not been impacted [1][2]
UPDATE 18/10/2022:
The threat actor reportedly has released samples of the stolen MyDeal
customer data to a hacking forum [3].
MITIGATION
Woolworths reported that they are working together with relevant
authorities to investigate the issue.
AusCERT is aware of the situation and will keep members updated with
information and share actionable Indicators of Compromise (IoCs)
as they become available [1][2].
UPDATE 18/10/2022:
While MyDeal has confirmed that no passwords were exposed in the attack,
MyDeal customers are encouraged to reset their passwords [3].
REFERENCES
[1] https://www.woolworthsgroup.com.au/au/en/media/latest-news/2022/mydeal-data-breach-notification.html
MyDeal data breach notification
[2] Woolworths subsidiary MyDeal leaks 2.2 million customers' details
https://www.itnews.com.au/news/woolworths-subsidiary-mydeal-leaks-22-million-customers-details-586489
[3] MyDeal data breach impacts 2.2M users, stolen data for sale online
https://www.bleepingcomputer.com/news/security/mydeal-data-breach-impacts-22m-users-stolen-data-for-sale-online/
AusCERT has made every effort to ensure that the information contained
in this document is accurate. However, the decision to use the information
described is the responsibility of each user or organisation. The decision to
follow or act on information or advice contained in this security bulletin is
the responsibility of each user or organisation, and should be considered in
accordance with your organisation's site policies and procedures. AusCERT
takes no responsibility for consequences which may arise from following or
acting on information or advice contained in this security bulletin.
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Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072
Internet Email: auscert@auscert.org.au
Facsimile: (07) 3365 7031
Telephone: (07) 3365 4417 (International: +61 7 3365 4417)
AusCERT personnel answer during Queensland business hours
which are GMT+10:00 (AEST).
On call after hours for member emergencies only.
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