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Commonwealth Bank

Commonwealth Bank Vendor Cyber Rating & Cyber Score

commbank.com.au
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Australia’s leading provider of financial services including retail, premium, business and institutional banking, funds management, superannuation, insurance, investment and sharebroking products and services. We are a business with more than 800,000 shareholders and over 52,000 employees. We offer a full range of financial services to help all Australians build and manage their finances. Connect with us, we'd like to hear from you: facebook.com/commonwealthbank twitter.com/commbank youtube.com/commbank youtube.com/commbankbusiness instagram.com/commbank Our Community Guidelines can be found at: https://www.commbank.com.au/support/social-networks.html For information on our Privacy Policy visit


Commonwealth Bank A.I CyberSecurity Scoring

Incident Details
Commonwealth Bank
Company Information
Website:http://www.commbank.com.au/
Employees number:47,247
Number of followers:660,861
NAICS:52
Industry Type:Financial Services
Homepage:commbank.com.au
Cyber Premium EstimationGet Supply Chain
Commonwealth Bank Risk Score (AI oriented)
Between 750 and 799
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Commonwealth BankFinancial Services
Updated:
01/04/2026
782/1000
Fair
Baa
AaaAaABaaBaBCaaCaC
Powered by our proprietary A.I cyber incident model
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Commonwealth Bank Global Score (TPRM)
xxxx
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Commonwealth BankFinancial Services
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Commonwealth Bank
Commonwealth BankFair
Current Score
782Baa (FAIR)
01000
2 incidents
0 avg impact
Incident timeline with MITRE ATT&CK tactics, techniques, and mitigations.
JUNE 2026
783Before Incident
MAY 2026
783Before Incident
APRIL 2026
782Before Incident
MARCH 2026
782Before Incident
FEBRUARY 2026
782Before Incident
JANUARY 2026
781Before Incident
DECEMBER 2025
781Before Incident
NOVEMBER 2025
781Before Incident
OCTOBER 2025
780Before Incident
SEPTEMBER 2025
780Before Incident
AUGUST 2025
779Before Incident
JULY 2025
779Before Incident
MAY 2018
754Before Incident
Breach
01 May 2018 • Commonwealth Bank
Commonwealth Bank

Commonwealth Bank Data Breach

678After Incident
CRITICAL-76
COM423251223
The Commonwealth Bank, the largest bank in Australia, revealed a significant security breach that resulted in the exposure of nearly 20 million clients' financial information. The organisation apologised for any concern this incident may have caused and reassured the customers that they had taken the appropriate precautions to protect their information. The impacted customers' accounts are still being watched over by the Commonwealth Bank, which is offering them complete protection against fraud and other illicit activity. The Commonwealth Bank was impacted by a series of unfavourable occurrences, the last of which is the case.
INCIDENT DETAILS -
TYPE
Data Breach
IMPACT
financial information
DATA BREACH
financial information
REFERENCES
Blog URLSource URL
JUNE 2016
801Before Incident
Data Leak
16 Jun 2016 • Commonwealth Bank
Commonwealth Bank

Commonwealth Bank Data Breach

728After Incident
HIGH-73
COM234728722
The Commonwealth Bank lost the personal financial histories of 12 million customers and chose not to reveal the breach to consumers. It happened after a subcontractor lost several tape drives containing the financial information in 2016. Personal banking statements contain potentially sensitive personal information and can paint a detailed portrait of the financial and personal affairs of a person which could potentially be misused by organized crime groups. The information disclosed in the breach did not contain anything that could directly compromise accounts, such as passwords or PIN numbers. The bank then undertook significant steps to attempt to retrieve the information.
INCIDENT DETAILS -
TYPE
Data Breach
IMPACT
personal financial historiessensitive personal information
DATA BREACH
personal financial historiessensitive personal informationNumber Of Records Exposed: 12 millionSensitivity Of Data: high
REFERENCES
Blog URLSource URL

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