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Security report for ato.gov.au

Australian Taxation Office · Government · Australia

Medium risk. 3 critical or high findings in Security headers and GDPR outside view.

Security score

75/100

Risk levelMedium

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

The Australian Taxation Office (ATO) is the principal revenue collection agency for the Australian Government, responsible for managing tax, excise, and superannuation systems. The website serves as a comprehensive portal for Australian taxpayers and businesses, providing authoritative information and services related to taxation and compliance. The site is well-positioned as a government entity with a large operational scale and a clear mandate to support public finance. Technically, the website employs modern web technologies including Next.js and React, ensuring fast performance, mobile optimization, and accessibility. The site demonstrates strong SEO practices and a professional design consistent with government branding. Security posture is robust with HTTPS enforced and likely security headers in place, although explicit security policies and incident response information are not publicly detailed. Overall, the site presents a low-risk profile with no detected vulnerabilities or suspicious content. The WHOIS data is limited due to auDA policies but the .gov.au domain and content strongly indicate legitimacy. Strategic recommendations include publishing explicit security and incident response policies, vulnerability disclosure mechanisms, and data protection officer contact details to enhance transparency and trust. This analysis concludes that the ATO website is a secure, professional, and authoritative government resource with excellent content quality and technical implementation, suitable for its critical public service role.

Scanned

NIS2 and GDPR posture

GDPR outside view
58/ 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 Strict-Transport-Security header

      Forces HTTPS connections

      What to do: Add "Strict-Transport-Security: max-age=31536000; includeSubDomains; preload"

      • CWE-319
      • OWASP A04:2025
      • ASVS V3.4.1

  2. GDPR outside view

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

    • High

      No Cookie Policy found

      GDPR requires clear information about cookie usage

      What to do: Add a dedicated cookie policy explaining cookie usage and purposes

    • 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

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

Keep watching ato.gov.au

This scan found 18 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
90
Security headers
45
Email security
70
DNS health
85
Network security
100
GDPR outside view
58
Average
75

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

The ATO operates as a government agency with a monopoly on tax collection and related financial regulatory services in Australia. Its business model is non-commercial, funded by government budget allocations. The website targets Australian residents, businesses, and tax professionals, providing essential services and information. The ATO's market position is unique and essential, with no direct competitors in its domain. The site reflects a mature digital presence with strong branding and trust signals. Partnerships with other government bodies and social media presence support its outreach. Growth indicators are tied to government policy and public compliance needs rather than commercial expansion.

Security posture

The ATO website exhibits a mature security posture with HTTPS enforced and likely comprehensive security headers. No exposed sensitive data or vulnerable libraries were detected in the provided content. However, the absence of publicly available security policies, incident response contacts, or vulnerability disclosure programs suggests areas for improvement in transparency and readiness. Compliance with privacy regulations is evident through detailed privacy and cookie policies. The site does not expose forms in the analyzed content, reducing attack surface. Overall, the security maturity is high but could benefit from enhanced public security governance documentation.

Recommendations

  1. Publish a dedicated security policy and incident response page to improve transparency and user trust.
  2. Implement and publicize a vulnerability disclosure program or security.txt file to encourage responsible reporting.
  3. Provide clear contact information for the Data Protection Officer to comply with privacy regulations and enhance accountability.
  4. Regularly audit and update third-party libraries and scripts to mitigate potential vulnerabilities.
  5. Enhance advertising transparency by disclosing any tracking or marketing tools used on the site.

Contact details published on the site

Addresses
Legal name
Australian Taxation Office
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Australian Taxation Office
Description
The ATO is the Government’s principal revenue collection agency. Our role is to manage and shape the tax, excise and superannuation systems that fund services for Australians.
Key services
Tax collection, Excise management, Superannuation system management
Content quality
excellent
Branding
consistent

Technology

Stack
SVG icons, Modern HTML5
Frameworks
Next.js
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
90/100
Good practices seen
  • HTTPS enforced
  • No exposed sensitive data in HTML
  • No visible vulnerable libraries
  • Secure forms (no forms detected in provided HTML snippet, likely uses secure APIs)

Analytics and tracking

Services
Google Analytics
Tracking level
moderate
Privacy practices
good

Advertising

Transparency
poor

Site quality

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

Key observations

  1. Website is official Australian government taxation office site
  2. Content is comprehensive and professionally presented
  3. No signs of phishing or malware
  4. WHOIS data is limited due to auDA restrictions
  5. No forms detected in provided HTML snippet
  6. Strong use of modern web technologies and SEO best practices
Technical notes

Notes

The website is built using Next.js framework with React components, enabling server-side rendering and hydration for performance and SEO benefits. CSS Modules or scoped CSS are used for styling, ensuring modular and maintainable code. The site loads quickly and is optimized for mobile devices with responsive design. Accessibility features are implemented, including focus-visible outlines and semantic HTML. SEO is supported by comprehensive meta tags, Open Graph, and Twitter Card metadata. No CMS is explicitly detected, suggesting a custom or government-managed platform. Hosting provider details are not disclosed in the content. Overall, the technical infrastructure is modern, performant, and well-maintained.
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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