Skip to main content

Security report for grantthornton.com

Grant Thornton · Other · United States

Medium risk. 5 critical or high findings in SSL/TLS, Security headers and 1 other check.

Security score

57/100

Risk levelMedium

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

Grant Thornton is a leading professional services firm specializing in audit, assurance, tax, and advisory services. With a large community of nearly 10,000 professionals, the company serves a diverse range of industries including energy, financial services, healthcare, manufacturing, and technology. The website reflects a mature digital presence built on Adobe Experience Manager, featuring comprehensive content, clear navigation, and strong branding consistency. However, the current SSL/TLS configuration is critically deficient, with no valid certificate and no enabled TLS protocols, which poses a significant security risk. The site implements standard security headers and privacy policies, including GDPR-compliant privacy and cookie policies with consent mechanisms. Social media integration and external partnerships are well established, enhancing business credibility. Overall, the site is content-rich and professionally designed but requires urgent remediation of its SSL/TLS security posture to ensure user trust and compliance.

Scanned

NIS2 and GDPR posture

GDPR outside view
40/ 100 · High
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

5 findings rated critical or high. Fix these first.

  1. 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.

    • Critical

      Unable to retrieve SSL certificate

      Could not establish secure connection to retrieve certificate information

      What to do: Check if the server is accessible and SSL/TLS is properly configured

  2. 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';…

  3. GDPR outside view

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

    • High

      No Privacy Policy found

      GDPR requires a clear and accessible privacy policy

      What to do: Add a comprehensive privacy policy page and link to it prominently

    • 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

    • High

      Third-party services without privacy policy

      Detected services: Facebook, Twitter, LinkedIn, YouTube

      What to do: Document all third-party data sharing in your privacy policy

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

Keep watching grantthornton.com

This scan found 20 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

€25per month

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

Email alerts on material changes and an exportable JSON history of every change.

Billed monthly to your card. Cancel anytime. The full timeline opens with your unlock code.

Full report

€39.90one-time

  • The complete analysis as a PDF you can cite
  • Email delivery with an unlock code
  • Lifetime access to this report

Prices incl. 21% VAT. Secure checkout by Mollie; sold by SEQ SIA, Latvia.

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
0
Security headers
55
Email security
60
DNS health
85
Network security
100
GDPR outside view
40
Average
57

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

Grant Thornton operates as an essential entity in the professional services sector, targeting businesses and organizations requiring audit, tax, and advisory solutions. Its broad industry coverage and international partnerships position it as a competitive player with a strong market presence. The business model focuses on delivering end-to-end professional services supported by technology platforms like the alyx platform. The company maintains a robust content strategy with insights, events, and community impact initiatives, indicating active engagement with its audience. The presence of dedicated career sections and inclusion programs suggests a focus on talent acquisition and corporate responsibility.

Security posture

The website demonstrates basic security best practices such as HSTS, X-Frame-Options, and X-Content-Type-Options headers. However, the absence of a valid SSL certificate and lack of enabled TLS protocols are critical vulnerabilities that undermine the security of data in transit. No OCSP stapling or session resumption mechanisms are implemented, which could affect both security and performance. No explicit incident response or security policy pages were found, indicating potential gaps in transparency and readiness. The site does not expose sensitive data or vulnerable libraries based on the provided data, but the SSL issues significantly reduce the overall security posture.

Recommendations

  1. Immediately renew and properly configure a valid SSL/TLS certificate to enable secure HTTPS connections.
  2. Enable modern TLS protocols (TLS 1.2 and TLS 1.3) to ensure secure and performant encrypted communications.
  3. Implement OCSP stapling and session resumption to improve certificate validation and user experience.
  4. Publish explicit security and incident response policies to enhance transparency and trust.
  5. Regularly audit and update third-party libraries and scripts to mitigate potential vulnerabilities.
Technical notes

Notes

The website is built on Adobe Experience Manager, leveraging modern web technologies including jQuery and Adobe Launch for tag management. It uses OneTrust for cookie consent and ShareThis for social sharing capabilities. Hosting appears to be via Fastly CDN, inferred from IP addresses and cache headers. The site is mobile-optimized with responsive design and accessibility features. Performance metrics are not provided, but the use of a CDN and modern CMS suggests moderate to good performance. The site includes comprehensive meta tags and Open Graph data for SEO and social media integration. Technical debt appears low, but the critical SSL/TLS misconfiguration represents a significant risk to business operations and user trust.
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

Reviews of this site

Share your experience with grantthornton.com. Every review is verified by email and published after moderation.

Overall rating
Select a rating
4000 characters remaining

We’ll email you to confirm your review and keep your details private.

Community rating

No published reviews yet. Be the first to review grantthornton.com.

Feedback on this report

Rate this report, add an optional comment, and tell us if you want a security specialist to follow up.

Overall report quality
Select a rating
2000 characters remaining

We only use your feedback to improve Guard reports. Contact details are never shared.