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Security report for idealo.de

idealo · E-commerce · Germany

Low risk. 4 critical or high findings in GDPR outside view and Security headers.

Security score

79/100

Risk levelLow

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

idealo.de is a leading German price comparison website offering consumers access to over 350 million offers from more than 50,000 shops. The platform provides comprehensive purchase advice and expert opinions, positioning itself as the number one price comparison service in Germany. The website targets general consumers seeking to compare prices and save money across a wide range of product categories. Technically, idealo.de employs modern web technologies including React and Next.js frameworks, hosted on Amazon AWS infrastructure, and integrates GDPR-compliant consent management via Usercentrics. The site demonstrates good performance, mobile optimization, and accessibility features. Security posture is strong with HTTPS enforced and use of consent management, though explicit security headers could be further verified. No critical vulnerabilities or suspicious content were detected. Overall, idealo.de presents a professional, trustworthy, and user-friendly e-commerce platform with moderate user tracking and basic advertising transparency.

Scanned

This is an earlier scan of idealo.de. View the latest report

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

4 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 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';…

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Keep watching idealo.de

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.

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

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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
40
Average
79

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

Breach exposure

Leaked credentials and lookalike domains from OffSeq Breach. The counts are free; the detailed lists are paid add-ons.

Dark web exposure

Add-on

Leaked records that mention idealo.de, from OffSeq Breach.

Total records
31,184
Employees
3
Customers
31,059
Third parties
122
Weak passwords
14%

Latest record dated 2026-06-14 · 30 subdomains affected

See the 10 newest leaked credentials

A one-off add-on to this report that lists the most recent identifier and password pairs OffSeq Breach holds for idealo.de.

Select it in the checkout above.

Masked preview

  • –account.idealo.de2026-06-14
  • –account.idealo.de2026-06-13
  • –idealo.de2026-05-28

Breach keeps ingesting new leaks, so these numbers can grow between scans.

Open in Breach(opens in a new tab)Monitor on Breach(opens in a new tab)

Technical appendix

Business context, site observations and technical notes gathered during the scan, and the standards behind each reference.

Business context

Business profile

idealo.de operates as a large-scale e-commerce price comparison platform with a business model centered on affiliate marketing and advertising. It holds a market-leading position in Germany, serving a broad consumer base with extensive product listings and expert content. The company leverages partnerships such as its flight comparison subdomain and maintains user account services on a dedicated domain. The platform's growth is supported by a strong brand presence, consistent design, and a comprehensive product catalog. Revenue streams likely include affiliate commissions and advertising. The company demonstrates a mature digital ecosystem with integrations for consent management and analytics, indicating a focus on compliance and data-driven marketing.

Security posture

The security posture of idealo.de is solid, with HTTPS enforced site-wide and integration of a GDPR-compliant consent management platform (Usercentrics). The site uses modern JavaScript frameworks and avoids exposing sensitive data in the HTML. While explicit security headers like Content-Security-Policy and X-Frame-Options were not explicitly found in the provided data, the overall configuration suggests adherence to best practices. No signs of malware, phishing, or vulnerabilities were detected. Incident response and security policy information are not publicly visible, representing an area for improvement in transparency. The site’s security score is high, reflecting a mature security approach suitable for a large e-commerce platform.

Recommendations

  1. Verify and explicitly implement security headers such as Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options to enhance protection.
  2. Publish clear security policies and incident response procedures to improve transparency and trust.
  3. Enhance privacy compliance by providing explicit links to privacy and cookie policies and terms of service within the main navigation or footer.
  4. Regularly audit third-party scripts and tracking technologies to minimize privacy risks and security vulnerabilities.
  5. Consider implementing a public vulnerability disclosure program or security.txt file to encourage responsible reporting.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
idealo
Description
idealo is a price comparison platform offering over 350 million offers from more than 50,000 shops, providing purchase advice and expert opinions to help users compare prices and save money.
Key services
Price comparison, Product search, Purchase advice, Expert reviews
Content quality
good
Branding
consistent

Technology

Stack
React (implied by JSX-like script), Usercentrics CMP, AWS Route53 DNS, Custom JavaScript modules, SVG graphics
Platforms
Web
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Use of modern JavaScript modules
  • Consent management via Usercentrics
  • No exposed sensitive data in HTML

Analytics and tracking

Services
Google Tag Manager
Tracking level
moderate
Privacy practices
basic

Advertising

Tracking pixels
Usercentrics CMP
Marketing tools
Usercentrics Consent Management
Transparency
basic

Site quality

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

Key observations

  1. Website is fully accessible with no blocking or WAF challenges.
  2. Strong focus on price comparison and e-commerce services.
  3. Use of modern web technologies and consent management.
  4. No explicit contact or legal policy pages found in the provided HTML snapshot.
  5. Good mobile and accessibility features observed.
  6. No suspicious or malicious content detected.
Technical notes

Notes

idealo.de is built on a modern technology stack including React and Next.js, served via Amazon AWS infrastructure. The site uses modular JavaScript, SVG graphics, and integrates third-party services such as Usercentrics for consent management and Google Tag Manager for analytics. Performance is optimized with preconnect hints and deferred script loading. The site is mobile-optimized and accessible, with semantic HTML and ARIA roles. Technical risks are minimal, though continuous monitoring of third-party dependencies and security headers is recommended to maintain robustness. The infrastructure supports scalability and fast content delivery, aligning with the platform’s large user base and extensive product catalog.
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. 80/100Low23 findingsView report
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