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Security report for slotsup.com

SlotsUp · Media · Hong Kong

Low risk. 3 critical or high findings in GDPR outside view and SSL/TLS.

Security score

81/100

Risk levelLow

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

SlotsUp is a well-established online casino guide and review platform, operating since 2015 and headquartered in Hong Kong. The company offers a comprehensive data-driven and expert content approach to provide users with detailed casino, bonus, and game information, along with safety indexes and ratings. The website is professionally designed, mobile-optimized, and rich in relevant content, targeting adult online casino players globally. Technically, the site uses modern web technologies including React and Vite, with Google Analytics and Tag Manager for tracking. Security posture is good with HTTPS enforced, but lacks some security headers and explicit cookie consent mechanisms. WHOIS data is missing, which raises concerns about domain registration transparency. Overall, SlotsUp presents a trustworthy and professional front but should improve domain registration transparency and privacy compliance to enhance trust further.

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. 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

  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 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

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

Keep watching slotsup.com

This scan found 14 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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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
75
Security headers
80
Email security
90
DNS health
80
Network security
100
GDPR outside view
58
Average
81

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

SlotsUp occupies a strong position in the online casino media sector, leveraging a data-driven business model combined with expert and community-driven content. Its revenue likely stems from affiliate partnerships, advertising, and premium content. The platform targets a global audience of online casino players, offering localized content for multiple countries and languages. The company maintains active social media channels and a Trustpilot presence, enhancing credibility. The lack of visible phone contact and missing WHOIS data are notable gaps. The business shows signs of maturity with consistent branding and high-quality content, positioning it as a leading resource in its niche.

Security posture

The website enforces HTTPS and avoids exposing sensitive data in its HTML content. However, the absence of visible security headers such as Content-Security-Policy and X-Frame-Options suggests room for improvement. No known vulnerabilities or outdated libraries were detected. Privacy compliance is partial, with a privacy policy present but no explicit cookie consent mechanism. Incident response and security policy information are not publicly available. The missing WHOIS data and domain registration transparency reduce overall trust. The security posture is solid but could be enhanced by implementing recommended headers, explicit consent mechanisms, and publishing security policies.

Recommendations

  1. Implement and publish comprehensive security headers including Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options.
  2. Add a clear cookie consent banner/mechanism to comply with GDPR and other privacy regulations.
  3. Publish a dedicated security policy and incident response contact information to improve transparency.
  4. Investigate and resolve the missing WHOIS domain registration data to enhance domain trustworthiness.
  5. Enhance privacy compliance by explicitly stating data retention policies and user data rights.

Contact details published on the site

Addresses
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
SlotsUp
Description
SlotsUp is the largest collector of casino games and online casinos, that offer biggest range of free games & online casino brand reviews for players around the world. It is a user-centric guide to everything in the online casino industry, powered by data and experts since 2015.
Key services
Casino and game data collection, Casino and bonus reviews, Expert guides and blog content, Casino ratings and safety indexes
Content quality
excellent
Branding
consistent

Technology

Stack
React (implied by JSX and modulepreload scripts), Vite (vite:preloadError event), Google Tag Manager, Google Analytics, SVG icons, WebP images
Frameworks
React
Performance
moderate
Mobile
excellent
Accessibility
good
SEO
excellent

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • No exposed sensitive data in HTML
  • No visible vulnerable libraries

Analytics and tracking

Services
Google Analytics, Google Tag Manager
Tracking level
moderate
Privacy practices
basic

Advertising

Transparency
basic

Site quality

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

Key observations

  1. Website is fully accessible with no WAF or blocking detected
  2. Content is rich, professional, and focused on online casino industry
  3. No explicit adult content, but gambling content is adult-oriented
  4. WHOIS data is missing, which is unusual and reduces trust
  5. No visible contact phone numbers, only email and physical address
  6. Privacy and terms policies are present and comprehensive
  7. No explicit cookie consent mechanism detected
  8. Uses modern web technologies and good SEO practices
  9. Security headers not detected in provided data, improvement needed
Technical notes

Notes

SlotsUp uses a modern front-end stack with React and Vite, ensuring modular and performant web delivery. The site is mobile-optimized with responsive design and uses SVG icons and WebP images for efficient rendering. Google Tag Manager and Analytics are integrated for user behavior tracking. The site structure supports SEO best practices with comprehensive meta tags, Open Graph, and JSON-LD structured data. Performance is moderate, with potential for improvement by optimizing script loading and caching. No CMS is explicitly detected, suggesting a custom or headless architecture. Overall, the technical infrastructure is robust and modern, supporting a high-quality user experience.
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

Earlier scans of this domain

  1. 87/100Low19 findingsView report
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