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Security report for grosvenorcasinos.com

Grosvenor Casinos · Other · United Kingdom

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

Security score

76/100

Risk levelLow

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

Grosvenor Casinos operates a professional online casino platform targeting UK players, offering a variety of gambling services including slots, jackpots, live casino games, and poker. The website demonstrates a mature digital infrastructure with modern JavaScript frameworks, analytics, and user engagement tools. However, the absence of WHOIS registration data raises concerns about domain transparency and regulatory compliance, which is critical in the gambling industry. Security measures such as HTTPS and bot protection via Cloudflare Turnstile are in place, but explicit security policies and headers are not evident in the provided content. Privacy compliance is partially addressed through OneTrust cookie consent, though a clear privacy policy was not detected in the HTML snippet. Overall, the site presents a trustworthy and professional front but would benefit from enhanced transparency and security documentation.

Scanned

NIS2 and GDPR posture

GDPR outside view
88/ 100 · Low
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. 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
    • 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. 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
    • High

      Weak SSL Key Length

      SSL certificate uses 256-bit key, which is considered weak

      What to do: Use at least 2048-bit RSA or 256-bit ECC key

      • CWE-326
      • OWASP A04:2025
      • Mozilla TLS: Mozilla Server Side TLS 6.0 intermediate: rsa_key_size 2048

  3. DNS health

    DNS sends visitors and email to the right servers. Misconfigured records can cause outages or let someone redirect your traffic.

    • High

      Domain Expires Soon

      Domain expires in 22 days

      What to do: Renew domain registration before expiration

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

Keep watching grosvenorcasinos.com

This scan found 17 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.

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Full report

€39.90one-time

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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
57
Security headers
55
Email security
85
DNS health
70
Network security
100
GDPR outside view
88
Average
76

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 business is positioned as a leading UK online casino brand, focusing on a broad audience interested in gambling entertainment. Its business model revolves around online gaming services with revenue likely generated from player deposits and game participation. The use of advanced analytics and marketing tools indicates a data-driven approach to customer engagement and retention. The lack of visible contact or legal information in the analyzed content suggests these may be located on other pages or require further inspection. The company appears to maintain a consistent brand identity and leverages partnerships with technology providers for hosting and analytics.

Security posture

The website employs HTTPS and integrates bot mitigation via Cloudflare Turnstile, indicating a baseline security posture. Monitoring and performance tools such as New Relic and FullStory are used for operational insights. However, the absence of explicit security headers and documented security policies reduces the overall security maturity. No vulnerabilities or exposed sensitive data were detected in the analyzed content. The lack of a vulnerability disclosure program or security.txt file suggests room for improvement in transparency and incident response readiness. Overall, the security posture is good but could be strengthened by publishing clear security policies and enhancing header configurations.

Recommendations

  1. Publish a comprehensive privacy policy and terms of service accessible from the homepage.
  2. Ensure WHOIS domain registration details are publicly available or justified by privacy protection policies.
  3. Implement and publish a security policy and incident response contact information.
  4. Add standard security headers such as Content Security Policy, HSTS, X-Frame-Options, and X-Content-Type-Options.
  5. Consider establishing a vulnerability disclosure program or security.txt file to enhance transparency.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Grosvenor Casinos
Description
Explore Grosvenor Casinos online and access slots, jackpots, live casino games, poker, and all your favourite games from anywhere.
Key services
slots, jackpots, live casino games, poker
Content quality
good
Branding
consistent

Technology

Stack
JavaScript, React (react-datepicker), Socket.IO, Google Maps API, FullStory analytics, New Relic monitoring, OneTrust cookie consent, Cloudflare Turnstile captcha, Google Tag Manager, Survicate surveys, Force.com embedded service
Frameworks
React
Platforms
Web
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Cloudflare Turnstile captcha for bot protection
  • Content Security Policy violation event listener (JS)
  • Use of security monitoring tools (New Relic)

Analytics and tracking

Services
FullStory, New Relic, Google Tag Manager, MPSnare
Tracking level
extensive
Privacy practices
basic

Advertising

Ad networks
Abtasty
Tracking pixels
FullStory, New Relic, MPSnare
Marketing tools
Survicate surveys
Transparency
good

Site quality

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

Key observations

  1. Website is fully accessible with rich content and interactive features.
  2. No WHOIS data available, which is unusual for a commercial gambling site.
  3. Strong use of modern web technologies and analytics tools.
  4. Cookie consent and privacy mechanisms are implemented via OneTrust.
  5. No explicit contact or legal pages found in the provided HTML snippet.
  6. No visible security headers in the HTML source; recommend server header review.
  7. No forms detected in the provided HTML snippet; user registration or login forms likely loaded dynamically or on other pages.
Technical notes

Notes

The website uses a modern React-based frontend with integration of various third-party services including analytics (FullStory, New Relic), marketing (Google Tag Manager, Survicate), and security (Cloudflare Turnstile). The presence of Umbraco CMS is inferred from media URLs. Performance is moderate with asynchronous loading of scripts and APIs. Mobile optimization appears good, though accessibility features are basic. No CMS-specific vulnerabilities or outdated libraries were detected in the provided content. The technical infrastructure supports a scalable and interactive user experience but would benefit from enhanced accessibility and security header implementations.
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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