Commonwealth Bank
Company Details
Linkedin ID:
commonwealthbank
Website:
Employees number:
44,898
Number of followers:
597,225
NAICS:
52
Industry Type:
Homepage:
commbank.com.au
IP Addresses:
0
Company ID:
COM_3136400
Scan Status:
In-progress
Commonwealth Bank Company CyberSecurity Posture
commbank.com.au
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 https://www.commbank.com.au/support/privacy
Commonwealth Bank A.I CyberSecurity Scoring
Commonwealth Bank Risk Score (AI oriented)Between 750 and 799
Commonwealth Bank
Updated:
- Powered by our proprietary A.I cyber incident model
- Insurance preferes TPRM score to calculate premium
Commonwealth Bank Global Score (TPRM)XXXX
Commonwealth Bank
- Instant access to detailed risk factors
- Benchmark vs. industry & size peers
- Vulnerabilities
- Findings
Commonwealth Bank Company CyberSecurity News & History
Past Incidents
2
Attack Types
2
Commonwealth Bank
Breach
Rankiteo Explanation
Attack threatening the organization’s existence
Description: 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.
Commonwealth Bank
Data Leak
Rankiteo Explanation
Attack with significant impact with customers data leaks
Description: 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.
Commonwealth Bank Company Scoring based on AI Models
Cyber Incidents Likelihood 3 - 6 - 9 months
A.I Risk Score Likelihood 3 - 6 - 9 months
Underwriter Stats for Commonwealth Bank
Incidents vs Financial Services Industry Average (This Year)
No incidents recorded for Commonwealth Bank in 2025.
Incidents vs All-Companies Average (This Year)
No incidents recorded for Commonwealth Bank in 2025.
Incident Types Commonwealth Bank vs Financial Services Industry Avg (This Year)
No incidents recorded for Commonwealth Bank in 2025.
Incident History — Commonwealth Bank (X = Date, Y = Severity)
Commonwealth Bank cyber incidents detection timeline including parent company and subsidiaries
Commonwealth Bank Company Subsidiaries
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 https://www.commbank.com.au/support/privacy
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Commonwealth Bank CyberSecurity News
October 13, 2025 07:00 AM
Aussies warned over new $1,500 scam trend as 70,000 'frightening' emails sent out
Scammers are trying to whip people into a frenzy with trusted brands hoping they'll hand over their banking information. Here's an example.
October 08, 2025 07:00 AM
CBA's Banking System Switch To Amazon Represents Cybersecurity Recalibration
"CBA's move to AWS represents a cybersecurity recalibration: one that enhances agility, scalability, and intelligence in banking operations, but...
August 29, 2025 04:10 PM
Cybersecurity in the real estate sector
Cybersecurity in the real estate sector · Cybersecurity is increasingly important as real estate agencies move more processes online · Agencies can reduce risks...
August 20, 2025 07:00 AM
Australian banking regulator warns geopolitical tensions could lead to more cyber attacks
Australia's prudential regulator has cautioned that the country's banking system is facing increasing risk of cyberattacks as a result of...
June 27, 2025 07:00 AM
CommBank harnesses near real-time, AI-powered intelligence to outsmart the scammers
Commonwealth Bank of Australia (CommBank) today unveiled a new weapon in the fight against scams: a fleet of thousands of AI-powered bot...
April 29, 2025 07:00 AM
Australians' banking passwords stolen by malware
At least 30,000 Australian banking passwords were exposed between 2021 and 2025 after hackers infected devices with infostealer malware,...
April 08, 2025 07:00 AM
Australia seeks national unity in cybersecurity strategy
The Tech Council of Australia is rallying industry and government leaders to boost the nation's cybersecurity capabilities amid rising...
March 07, 2025 08:00 AM
Commonwealth Bank Cuts 164 Tech Jobs Despite AU$5.13B Profit, Sparking Union Outrage
Finance Sector Union national secretary Jason Hall is demanding answers from the Commonwealth Bank of Australia after news broke that 164...
January 22, 2025 11:44 PM
Cyber safety after a data breach
With so many data breaches making the press, it's useful to know what kinds of security steps you or your staff can take if they suspect a service they use...
Frequently Asked Questions
Explore insights on cybersecurity incidents, risk posture, and Rankiteo's assessments.
Commonwealth Bank CyberSecurity History Information
Official Website of Commonwealth Bank
The official website of Commonwealth Bank is http://www.commbank.com.au/.
Commonwealth Bank’s AI-Generated Cybersecurity Score
According to Rankiteo, Commonwealth Bank’s AI-generated cybersecurity score is 779, reflecting their Fair security posture.
How many security badges does Commonwealth Bank’ have ?
According to Rankiteo, Commonwealth Bank currently holds 0 security badges, indicating that no recognized compliance certifications are currently verified for the organization.
Does Commonwealth Bank have SOC 2 Type 1 certification ?
According to Rankiteo, Commonwealth Bank is not certified under SOC 2 Type 1.
Does Commonwealth Bank have SOC 2 Type 2 certification ?
According to Rankiteo, Commonwealth Bank does not hold a SOC 2 Type 2 certification.
Does Commonwealth Bank comply with GDPR ?
According to Rankiteo, Commonwealth Bank is not listed as GDPR compliant.
Does Commonwealth Bank have PCI DSS certification ?
According to Rankiteo, Commonwealth Bank does not currently maintain PCI DSS compliance.
Does Commonwealth Bank comply with HIPAA ?
According to Rankiteo, Commonwealth Bank is not compliant with HIPAA regulations.
Does Commonwealth Bank have ISO 27001 certification ?
According to Rankiteo,Commonwealth Bank is not certified under ISO 27001, indicating the absence of a formally recognized information security management framework.
Industry Classification of Commonwealth Bank
Commonwealth Bank operates primarily in the Financial Services industry.
Number of Employees at Commonwealth Bank
Commonwealth Bank employs approximately 44,898 people worldwide.
Subsidiaries Owned by Commonwealth Bank
Commonwealth Bank presently has no subsidiaries across any sectors.
Commonwealth Bank’s LinkedIn Followers
Commonwealth Bank’s official LinkedIn profile has approximately 597,225 followers.
NAICS Classification of Commonwealth Bank
Commonwealth Bank is classified under the NAICS code 52, which corresponds to Finance and Insurance.
Commonwealth Bank’s Presence on Crunchbase
Yes, Commonwealth Bank has an official profile on Crunchbase, which can be accessed here: https://www.crunchbase.com/organization/commonwealth-bank-of-australia.
Commonwealth Bank’s Presence on LinkedIn
Yes, Commonwealth Bank maintains an official LinkedIn profile, which is actively utilized for branding and talent engagement, which can be accessed here: https://www.linkedin.com/company/commonwealthbank.
Cybersecurity Incidents Involving Commonwealth Bank
As of November 27, 2025, Rankiteo reports that Commonwealth Bank has experienced 2 cybersecurity incidents.
Number of Peer and Competitor Companies
Commonwealth Bank has an estimated 29,523 peer or competitor companies worldwide.
What types of cybersecurity incidents have occurred at Commonwealth Bank ?
Incident Types: The types of cybersecurity incidents that have occurred include Data Leak and Breach.
How does Commonwealth Bank detect and respond to cybersecurity incidents ?
Detection and Response: The company detects and responds to cybersecurity incidents through an remediation measures with attempt to retrieve the information..
Incident Details
Can you provide details on each incident ?
Title: Commonwealth Bank Data Breach
Description: 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.
Type: Data Breach
Attack Vector: Loss of Physical Media
What are the most common types of attacks the company has faced ?
Common Attack Types: The most common types of attacks the company has faced is Breach.
Impact of the Incidents
What was the impact of each incident ?
Incident : Data Breach COM234728722
Data Compromised: Personal financial histories, Sensitive personal information
Incident : Data Breach COM423251223
Data Compromised: Financial information
What types of data are most commonly compromised in incidents ?
Commonly Compromised Data Types: The types of data most commonly compromised in incidents are Personal Financial Histories, Sensitive Personal Information, , Financial Information and .
Which entities were affected by each incident ?
Incident : Data Breach COM234728722
Entity Name: Commonwealth Bank
Entity Type: Financial Institution
Industry: Banking
Customers Affected: 12 million
Incident : Data Breach COM423251223
Entity Name: Commonwealth Bank
Entity Type: Bank
Industry: Financial Services
Location: Australia
Size: Large
Customers Affected: 20000000
Response to the Incidents
What measures were taken in response to each incident ?
Incident : Data Breach COM234728722
Remediation Measures: attempt to retrieve the information
Data Breach Information
What type of data was compromised in each breach ?
Incident : Data Breach COM234728722
Type of Data Compromised: Personal financial histories, Sensitive personal information
Number of Records Exposed: 12 million
Sensitivity of Data: high
Incident : Data Breach COM423251223
Type of Data Compromised: Financial information
Number of Records Exposed: 20000000
What measures does the company take to prevent data exfiltration ?
Prevention of Data Exfiltration: The company takes the following measures to prevent data exfiltration: attempt to retrieve the information, .
Additional Questions
Impact of the Incidents
What was the most significant data compromised in an incident ?
Most Significant Data Compromised: The most significant data compromised in an incident were personal financial histories, sensitive personal information, , financial information and .
Data Breach Information
What was the most sensitive data compromised in a breach ?
Most Sensitive Data Compromised: The most sensitive data compromised in a breach were financial information, personal financial histories and sensitive personal information.
What was the number of records exposed in the most significant breach ?
Number of Records Exposed in Most Significant Breach: The number of records exposed in the most significant breach was 12.0M.
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Latest Global CVEs (Not Company-Specific)
Description
Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. Prior to versions 19.2.16, 20.3.14, and 21.0.1, there is a XSRF token leakage via protocol-relative URLs in angular HTTP clients. The vulnerability is a Credential Leak by App Logic that leads to the unauthorized disclosure of the Cross-Site Request Forgery (XSRF) token to an attacker-controlled domain. Angular's HttpClient has a built-in XSRF protection mechanism that works by checking if a request URL starts with a protocol (http:// or https://) to determine if it is cross-origin. If the URL starts with protocol-relative URL (//), it is incorrectly treated as a same-origin request, and the XSRF token is automatically added to the X-XSRF-TOKEN header. This issue has been patched in versions 19.2.16, 20.3.14, and 21.0.1. A workaround for this issue involves avoiding using protocol-relative URLs (URLs starting with //) in HttpClient requests. All backend communication URLs should be hardcoded as relative paths (starting with a single /) or fully qualified, trusted absolute URLs.
Risk Information
cvss4
Base: 7.7
Severity: LOW
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
References
- https://github.com/angular/angular/commit/0276479e7d0e280e0f8d26fa567d3b7aa97a516f
- https://github.com/angular/angular/commit/05fe6686a97fa0bcd3cf157805b3612033f975bc
- https://github.com/angular/angular/commit/3240d856d942727372a705252f7c8c115394a41e
- https://github.com/angular/angular/releases/tag/19.2.16
- https://github.com/angular/angular/releases/tag/20.3.14
- https://github.com/angular/angular/releases/tag/21.0.1
- https://github.com/angular/angular/security/advisories/GHSA-58c5-g7wp-6w37
Description
Forge (also called `node-forge`) is a native implementation of Transport Layer Security in JavaScript. An Uncontrolled Recursion vulnerability in node-forge versions 1.3.1 and below enables remote, unauthenticated attackers to craft deep ASN.1 structures that trigger unbounded recursive parsing. This leads to a Denial-of-Service (DoS) via stack exhaustion when parsing untrusted DER inputs. This issue has been patched in version 1.3.2.
Risk Information
cvss4
Base: 8.7
Severity: LOW
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Description
Forge (also called `node-forge`) is a native implementation of Transport Layer Security in JavaScript. An Integer Overflow vulnerability in node-forge versions 1.3.1 and below enables remote, unauthenticated attackers to craft ASN.1 structures containing OIDs with oversized arcs. These arcs may be decoded as smaller, trusted OIDs due to 32-bit bitwise truncation, enabling the bypass of downstream OID-based security decisions. This issue has been patched in version 1.3.2.
Risk Information
cvss4
Base: 6.3
Severity: LOW
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Description
Suricata is a network IDS, IPS and NSM engine developed by the OISF (Open Information Security Foundation) and the Suricata community. Prior to versions 7.0.13 and 8.0.2, working with large buffers in Lua scripts can lead to a stack overflow. Users of Lua rules and output scripts may be affected when working with large buffers. This includes a rule passing a large buffer to a Lua script. This issue has been patched in versions 7.0.13 and 8.0.2. A workaround for this issue involves disabling Lua rules and output scripts, or making sure limits, such as stream.depth.reassembly and HTTP response body limits (response-body-limit), are set to less than half the stack size.
Risk Information
cvss3
Base: 7.5
Severity: LOW
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Description
Suricata is a network IDS, IPS and NSM engine developed by the OISF (Open Information Security Foundation) and the Suricata community. In versions from 8.0.0 to before 8.0.2, a NULL dereference can occur when the entropy keyword is used in conjunction with base64_data. This issue has been patched in version 8.0.2. A workaround involves disabling rules that use entropy in conjunction with base64_data.
Risk Information
cvss3
Base: 7.5
Severity: LOW
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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Incident
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Network Security
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SBOM (Software Bill of Materials)
Gain visibility into the software components used within an organization to detect vulnerabilities, manage risk, and ensure supply chain security.
CMDB (Configuration Management Database)
Monitor and manage all IT assets and their configurations to ensure accurate, real-time visibility across the company's technology environment.
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