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Security report for commbank.com.au

Commonwealth Bank of Australia · Finance · Australia

Low risk. 3 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

79/100

Risk levelLow

0–100, higher is better. How it is calculated

Commonwealth Bank of Australia (CommBank) is a leading financial institution providing a broad range of personal, business, and institutional banking services. The website clearly targets Australian consumers and businesses, offering banking products, loans, insurance, investing, and superannuation services. The site is professionally designed with consistent branding and comprehensive content that supports its market position as a major Australian bank. Technically, the site leverages Adobe Experience Manager as its CMS, integrates modern analytics and marketing tools, and demonstrates good performance and accessibility standards. Security posture is strong with HTTPS enforcement, security headers, and scam awareness content, although explicit security policies and incident response details are not published. WHOIS data is unavailable due to .au domain privacy policies but the domain and content strongly indicate legitimacy. Overall, the site is trustworthy, well-maintained, and compliant with privacy regulations.

Scanned

NIS2 and GDPR posture

GDPR outside view
73/ 100 · Medium
Checks completed
7of 7

NIS2 Art. 21(2)

  1. (a) Risk analysis and security policies: Not visible from outside
  2. (b) Incident handling: One indicator
  3. (c) Business continuity, backups and crisis management: Not visible from outside
  4. (d) Supply chain security: Not visible from outside
  5. (e) Secure acquisition, development and maintenance, including vulnerability handling: Partly checked
  6. (f) Assessing the effectiveness of security measures: Not visible from outside
  7. (g) Cyber hygiene and security training: Not visible from outside
  8. (h) Cryptography and encryption: Partly checked
  9. (i) HR security, access control and asset management: One indicator
  10. (j) Multi-factor authentication and secured communications: Not visible from outside

This scan rated NIS2 with an earlier keyword method that is no longer shown; rescan for the per-article view. Risk management, continuity, supply chain, training, MFA, management oversight (Art. 20) and incident reporting (Art. 23) need internal evidence, and Guard cannot tell whether NIS2 applies to this organisation.

GDPR is indicative only, based on publicly visible signals: Articles 7, 12, 13 and 32 of Regulation (EU) 2016/679 and Article 5(3) of the ePrivacy Directive. Not a certification or legal assessment.

Priority findings

3 findings rated critical or high. Fix these first.

  1. Security headers

    Security headers are instructions your web server sends to every visitor’s browser. Missing ones leave visitors more exposed to attacks such as clickjacking and injected scripts.

    • High

      Missing Content-Security-Policy header

      Controls resources the browser is allowed to load

      What to do: Implement a Content-Security-Policy appropriate for your application

      • ASVS V3.4.3
      • OWASP Secure Headers: OWASP Secure Headers Project recommends Content-Security-Policy: default-src 'self'; form-action 'self'; base-uri 'self'; object-src 'none';…

  2. GDPR outside view

    These are the privacy signals visitors and data protection authorities look for under GDPR.

    • High

      No Cookie Consent Banner found

      GDPR requires explicit consent for non-essential cookies

      What to do: Implement a cookie consent banner that appears on first visit

  3. SSL/TLS

    TLS encrypts the connection and proves the site is really yours. Weak or expiring certificates trigger browser warnings and put traffic at risk.

    • High

      Weak Protocols Supported

      Server supports weak protocols: TLSv1.1

      What to do: Disable TLS 1.0, TLS 1.1, and all SSL versions

      • CWE-327
      • OWASP A04:2025
      • ASVS V12.1.1

Need hands-on remediation? Email guard@offseq.com

Keep watching commbank.com.au

This scan found 16 issues across 6 checks. Monitoring re-runs those checks daily, emails you when something material changes and records each fix, so you can show progress.

Daily monitoring

Recommended

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  • TLS certificates and expiry
  • DNS records
  • SPF, DKIM and DMARC
  • Security headers
  • GDPR and NIS2 posture
  • Exposed services
  • Third-party trackers
  • Security score drift

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Results by check

Each check with its score, findings and the evidence it collected.

How this score is calculated

The security score runs 0–100, higher is better. It is the plain average of the security checks that completed in this scan, each counted equally. A check that could not run is left out: it counts neither as a pass nor as a fail.

Counted in this score

SSL/TLS
72
Security headers
55
Email security
87
DNS health
85
Network security
100
GDPR outside view
73
Average
79

Not counted

  • NIS2 outside view: Re-weights evidence from the TLS, email, DNS, network and hygiene checks, so counting it would count that evidence twice. Shown on its own.
  • OffSeq Observations: An AI reading of the site, useful context but not reproducible evidence. Shown on its own.

Findings that cap the score at 49

Each of these is serious on its own, so while any is present the site cannot rate better than high risk, however good the other checks are.

  • The certificate is not trusted by browsers
  • The website is not served over HTTPS
  • A database, remote desktop, file-sharing or Telnet service is reachable from the internet
  • The page loads a script from a compromised source
  • The domain registration has expired
  • SPF authorises every server to send mail as the domain

Partial scans

When the site blocks Guard or most checks cannot run, the score covers only the checks that ran (usually DNS and email), is capped at 75 and is shown as partial, without a risk level.

Risk levels

  • Critical0–25
  • High26–49
  • Medium50–75
  • Low76–100

Technical appendix

Business context, site observations and technical notes gathered during the scan, and the standards behind each reference.

Business context

Business profile

CommBank operates in the banking and finance sector with an enterprise-sized footprint in Australia. Its business model focuses on retail and business banking, supported by digital platforms for customer engagement. The company maintains a strong brand presence and offers a wide range of financial products. The website reflects a mature digital strategy with integrated marketing and analytics tools, indicating ongoing investment in customer experience and data-driven decision-making. Partnerships and subsidiaries such as CommSec and CommBiz are integrated under the main domain ecosystem. The company emphasizes security awareness and customer support, which aligns with regulatory and market expectations.

Security posture

The website demonstrates a mature security posture with enforced HTTPS, use of security headers, and no visible exposure of sensitive data. It includes educational content on scams and security alerts, enhancing user awareness. However, the absence of a published security policy, incident response contact details, or vulnerability disclosure program represents an area for improvement. The site uses multiple third-party scripts and tracking technologies, which should be regularly audited to mitigate supply chain risks. Overall, the security measures are robust for a financial institution's public website, but transparency on security governance could be enhanced.

Recommendations

  1. Publish a dedicated security policy and incident response information to improve transparency and trust.
  2. Implement and publicize a vulnerability disclosure program or security.txt file to encourage responsible reporting.
  3. Enhance cookie consent mechanisms with detailed data retention and processing disclosures.
  4. Regularly audit third-party scripts and tracking technologies for security and privacy compliance.
  5. Provide clear contact information for data protection officers or privacy inquiries.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Commonwealth Bank of Australia
Description
CommBank offers personal banking, business solutions, institutional banking, company information, and more
Key services
Bank accounts, Credit cards, Home loans, Insurance, Investing & Superannuation, Business banking, Institutional banking
Content quality
excellent
Branding
consistent

Technology

Stack
JavaScript, jQuery, Adobe Experience Manager (AEM), Google Tag Manager, Adobe Target, AppDynamics, YouTube embed
Frameworks
Adobe Experience Manager, jQuery
Platforms
Web
Performance
moderate
Mobile
excellent
Accessibility
excellent
SEO
good

Security

Observed score
90/100
Good practices seen
  • HTTPS enforced
  • Use of security headers
  • No exposed sensitive data in HTML
  • Secure login forms with proper ARIA labels
  • Use of modern analytics and tracking with consent

Analytics and tracking

Services
Google Analytics 4, Adobe Analytics, Facebook Analytics
Tracking level
extensive
Privacy practices
good

Advertising

Ad networks
Google DoubleClick
Tracking pixels
Facebook Pixel, Adobe Target
Marketing tools
Adobe Experience Platform
Transparency
good

Site quality

Design
excellent
User experience
excellent
Content relevance
excellent
Navigation
excellent
Professionalism
excellent
Trustworthiness
high

Key observations

  1. Website is fully accessible with rich content and multimedia
  2. Strong focus on security awareness and scam prevention
  3. Comprehensive product and service offerings clearly presented
  4. Use of modern web technologies and analytics
  5. No signs of phishing or malicious content
  6. No exposed sensitive information or credentials
  7. Good accessibility and mobile optimization
  8. No explicit contact emails or phone numbers found in HTML; contact via support pages
  9. WHOIS data unavailable due to .au domain privacy policies
Technical notes

Notes

The website is built on Adobe Experience Manager, a robust enterprise CMS, and uses modern JavaScript libraries including jQuery. It integrates Google Tag Manager, Adobe Target, and Facebook Pixel for analytics and marketing. Performance is moderate with room for optimization, but mobile responsiveness and accessibility are excellent. The site uses HTTPS with strong SSL configuration and security headers. No CMS or hosting provider vulnerabilities were detected. The technical infrastructure supports a high-quality user experience and aligns with enterprise standards for a major financial institution.
Standards and sources

Reference chips under each finding point to the standard, regulation or specification the finding relates to. They are taken from the official datasets below and mapped conservatively: a finding with no defensible link shows none. NIS2 and GDPR references mark where a finding is relevant evidence, not a compliance verdict. Implementing Regulation (EU) 2024/2690 binds digital infrastructure and digital service providers; for other entities it is the most detailed public reading of the Article 21 measures. WCAG, EN 301 549, European Accessibility Act and Web Accessibility Directive references name the requirement an automated accessibility rule relates to; they are not a conformance verdict.

Retrieved 2026-10-25

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