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Security report for idealo.fr

idealo · E-commerce · France

Medium risk. 7 critical or high findings in GDPR outside view, Security headers and 1 other check.

Security score

74/100

Risk levelMedium

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

idealo.fr is a leading French price comparison platform offering consumers the ability to compare prices, read product reviews, and receive price alerts across a wide range of product categories. The website is professionally designed, mobile-optimized, and provides a seamless user experience with features such as wishlists and price alerts. The platform targets general consumers looking for the best deals online and operates within the e-commerce sector. Technically, the site leverages modern web technologies including React with Next.js, and integrates consent management tools to comply with GDPR regulations. Security posture is strong with HTTPS enforcement and security headers, although explicit security policies and incident response contacts are not publicly disclosed. The absence of WHOIS data for the domain is a notable gap but does not detract significantly from the overall legitimacy given the professional web presence and branding consistency. Overall, idealo.fr demonstrates a mature digital infrastructure and a trustworthy e-commerce service.

Scanned

NIS2 and GDPR posture

GDPR outside view
10/ 100 · Critical
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

7 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.

    • Critical

      EU business without adequate privacy measures

      EU businesses are subject to strict GDPR requirements

      What to do: Implement comprehensive GDPR compliance including privacy policy, cookie consent, and data protection measures

    • 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 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. 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';…

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

Keep watching idealo.fr

This scan found 15 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
95
Security headers
65
Email security
98
DNS health
75
Network security
100
GDPR outside view
10
Average
74

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

idealo.fr holds a strong market position as a price comparison service in France, supported by a broad international presence through localized domains. Its business model centers on facilitating consumer purchases by aggregating product prices and reviews, likely generating revenue through affiliate partnerships and advertising. The platform's key competitive advantages include comprehensive product coverage, user-friendly features like wishlists and price alerts, and compliance with privacy regulations. The company targets a wide consumer base interested in online shopping savings. The ecosystem includes related domains for flights and other localized markets, indicating strategic expansion. While direct contact information is limited on the main site, the platform's branding and technical sophistication suggest a well-established operation.

Security posture

The website employs strong security measures including HTTPS, modern security headers, and cookie consent management via Usercentrics CMP, reflecting good compliance with GDPR. No exposed sensitive data or vulnerable libraries were detected in the analyzed content. However, the absence of a published security policy or incident response contact reduces transparency and may impact incident handling readiness. No known vulnerabilities or suspicious domains were identified. The security score is high, but improvements could be made by publishing explicit security and incident response information and implementing a vulnerability disclosure policy.

Recommendations

  1. Publish a dedicated security policy page detailing security practices and incident response procedures.
  2. Provide clear contact channels for security incidents, such as security@ or abuse@ email addresses.
  3. Implement and publish a vulnerability disclosure or security.txt file to encourage responsible reporting.
  4. Enhance visibility of company contact information to improve trust and compliance.
  5. Regularly audit and update third-party scripts and libraries to mitigate potential vulnerabilities.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
idealo
Description
Comparer les prix pour vos achats en ligne avec idealo.fr, comparateur de prix pour acheter moins cher ! ✓ Avis ✓ Tests produits ✓ Comparatifs
Key services
price comparison, product reviews, product tests, price alerts, wishlist management
Content quality
excellent
Branding
consistent

Technology

Stack
React (Next.js), JavaScript, CSS, Usercentrics CMP, Custom idealo CMP, Swiper carousel
Frameworks
Next.js
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
90/100
Good practices seen
  • HTTPS enforced
  • Cookie consent management
  • Secure login and session management
  • No exposed sensitive data in HTML

Analytics and tracking

Services
Google Tag Manager
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Usercentrics CMP
Marketing tools
Usercentrics Consent Management Platform
Transparency
good

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 blocking or WAF challenges.
  2. WHOIS data is missing or not found in AFNIC database, which is unusual for a commercial domain.
  3. Strong privacy and cookie consent mechanisms are implemented.
  4. No direct contact emails or phone numbers found on the main page HTML.
  5. Website uses modern web technologies and good SEO practices.
  6. No explicit security policy or incident response contacts published.
  7. Content is safe and suitable for general audiences.
  8. Multiple localized versions of the site exist, indicating international presence.
  9. Use of Usercentrics CMP indicates GDPR compliance efforts.
Technical notes

Notes

The website is built using modern web technologies, primarily React with Next.js framework, ensuring server-side rendering and good SEO performance. It uses advanced JavaScript modules, CSS styling, and integrates third-party consent management and analytics tools. The site is mobile-optimized with responsive design and accessible navigation features. Performance indicators suggest fast loading times and efficient resource management. No CMS was explicitly detected, indicating a custom or proprietary platform. Hosting provider details were not discernible from the content. Overall, the technical infrastructure supports a high-quality user experience and robust operational stability.
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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