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Security report for groupon.es

Groupon · E-commerce · Spain

Low risk. 2 critical or high findings in Security headers and SSL/TLS.

Security score

81/100

Risk levelLow

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

Groupon.es is the Spanish localized website of Groupon, a global e-commerce marketplace offering discounted deals and coupons for local services, products, and experiences. The site targets consumers in Spain seeking savings on a wide range of categories including beauty, gastronomy, travel, and entertainment. The platform supports online and in-person redemption and provides a mobile app for enhanced user experience. Technically, the website employs modern JavaScript frameworks such as React/Preact, integrates advanced fraud detection services like Signifyd and Riskified, and uses Google services for analytics and advertising. Security posture is strong with HTTPS, security headers, and CAPTCHA protections in place. Privacy compliance is evident with GDPR-aligned policies and cookie consent mechanisms. However, WHOIS data is unavailable due to query restrictions, though the site’s branding and infrastructure indicate legitimacy. Overall, Groupon.es presents a professional, secure, and user-friendly e-commerce platform with a solid market position in Spain.

Scanned

NIS2 and GDPR posture

GDPR outside view
100/ 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

2 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. 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 groupon.es

This scan found 16 issues across 4 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
54
Security headers
45
Email security
100
DNS health
85
Network security
100
GDPR outside view
100
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

Groupon.es operates as a major player in the Spanish e-commerce discount market, leveraging Groupon's global brand and infrastructure. Its business model centers on aggregating deals from local merchants and offering them to consumers at discounted rates, generating revenue through commissions and advertising. The platform’s extensive deal categories and mobile app support broad consumer engagement. The company benefits from a strong partnership ecosystem, including fraud prevention and analytics providers, enhancing trust and operational efficiency. Market positioning is strong, supported by consistent branding and a comprehensive content offering. Growth potential lies in expanding deal categories and enhancing personalization through data analytics.

Security posture

The website demonstrates a mature security posture with HTTPS enforced, multiple security headers implemented, and integration of anti-fraud services such as Signifyd and Riskified. The presence of Google reCAPTCHA protects against automated abuse. Privacy policies and cookie consent mechanisms align with GDPR requirements, indicating compliance focus. However, explicit security policies, incident response details, and vulnerability disclosure mechanisms are not publicly available, representing areas for improvement. No obvious vulnerabilities or exposed sensitive data were detected in the analysis. Overall, the security measures are robust for an e-commerce platform, supporting user trust and data protection.

Recommendations

  1. Publish a dedicated security policy and incident response page to enhance transparency.
  2. Implement and publicize a vulnerability disclosure program or security.txt file.
  3. Provide clear contact information for security and privacy inquiries to improve user trust.
  4. Regularly review and update third-party scripts and libraries to mitigate potential vulnerabilities.
  5. Enhance data retention and privacy disclosures to align with evolving regulatory requirements.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Groupon
Description
Groupon is an online marketplace offering over 300,000 deals and experiences in Spain, allowing users to purchase coupons and redeem discounts online or in person via their app.
Key services
Discount coupons for local services and products, Online and in-person redemption, Mobile app for deal access, Travel and getaway deals
Content quality
good
Branding
consistent

Technology

Stack
JavaScript, React/Preact, Google reCAPTCHA, Google Tag Manager, Signifyd fraud protection, Riskified fraud detection, Hogan.js, Underscore.js, Modernizr
Frameworks
React/Preact
Platforms
Web, Mobile app (iOS and Android)
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
90/100
Good practices seen
  • Use of HTTPS
  • reCAPTCHA integration
  • Fraud detection scripts (Signifyd, Riskified)
  • Secure login forms
  • Cookie consent mechanism

Analytics and tracking

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

Advertising

Ad networks
Google Ad Manager, Freestar (disabled)
Tracking pixels
Signifyd, Riskified
Marketing tools
Optimize Suite
Transparency
good

Site quality

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

Key observations

  1. Website content is fully accessible and not blocked by WAF.
  2. WHOIS data is unavailable due to query restrictions; no registrar or domain age info extracted.
  3. Website uses modern web technologies and security best practices.
  4. Privacy and cookie policies are present and GDPR compliant.
  5. No direct contact emails or phone numbers found on the homepage.
  6. Strong branding and consistent user experience.
  7. Multiple external domains used for CDN, analytics, and fraud prevention.
  8. No adult or explicit content detected; safe for general audiences.
Technical notes

Notes

The website uses a modern technology stack including React/Preact for frontend rendering, supported by JavaScript libraries such as Hogan.js and Underscore.js. It leverages Google services for analytics and advertising, and integrates advanced fraud detection tools. The site is optimized for desktop and mobile with responsive design and accessibility considerations. Performance is moderate with preloading and asynchronous script loading techniques employed. The use of multiple CDNs ensures content delivery efficiency. No CMS was explicitly detected, suggesting a custom or proprietary platform. Technical risks are minimal but depend on maintaining third-party integrations and timely updates.
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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