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Security report for idealo.at

idealo · E-commerce · Austria

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

Security score

81/100

Risk levelLow

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

idealo.at is a leading Austrian price comparison website offering consumers access to over 100 million offers from more than 18,000 shops. The platform provides comprehensive purchase advice and expert opinions to help users make informed buying decisions and save money. It operates as part of the idealo group, which has multiple localized sites across Europe. The website is well-branded, professionally designed, and targets general consumers in Austria seeking competitive pricing on a wide range of products. From a technical perspective, idealo.at employs modern web technologies including React (Preact), Next.js for server-side rendering, and advanced consent management tools to ensure GDPR compliance. The site is optimized for performance and mobile responsiveness, providing a smooth user experience. Security best practices are observed with HTTPS enforcement, secure cookie handling, and no visible vulnerabilities or exposed sensitive data. While explicit WHOIS data is unavailable due to privacy protection, the website's consistency, trust signals, and compliance with privacy regulations indicate a mature and legitimate business. However, the site lacks publicly available security policies or vulnerability disclosure mechanisms, which could be improved to enhance transparency and incident response readiness. Overall, idealo.at demonstrates a strong digital presence with robust technical infrastructure and a solid security posture, making it a trustworthy platform for consumers. Strategic recommendations include publishing detailed security policies, implementing a security.txt file, and providing clear security contact channels to further strengthen trust and compliance.

Scanned

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';…

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

Keep watching idealo.at

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

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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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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
85
Network security
100
GDPR outside view
40
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

idealo.at holds a strong market position as Austria's major price comparison platform, leveraging a broad network of over 18,000 shops and millions of product offers. Its business model centers on affiliate marketing and advertising revenue generated through user traffic and transactions. The platform targets a wide consumer base interested in electronics, fashion, home goods, and more. The presence of multiple localized partner sites across Europe indicates a well-established partnership ecosystem. Growth indicators include extensive product categories, popular search trends, and integration of expert reviews. The company benefits from consistent branding and a professional online presence, supporting customer trust and retention.

Security posture

The website exhibits a mature security posture with enforced HTTPS, secure cookie attributes (SameSite=strict), and integration of a consent management platform to comply with GDPR. No exposed credentials or sensitive data were detected in the HTML content. The use of modern JavaScript frameworks and controlled third-party scripts reduces the attack surface. However, the absence of publicly available security policies, incident response information, and vulnerability disclosure channels represents a compliance gap. The site would benefit from publishing a security.txt file and providing explicit security contact information to improve incident handling and transparency. Overall, the security maturity is good but can be enhanced with formal documentation and communication.

Recommendations

  1. Publish a comprehensive security policy and incident response plan accessible on the website.
  2. Implement and expose a security.txt file to facilitate responsible vulnerability disclosure.
  3. Enhance HTTP security headers and document their usage for transparency.
  4. Regularly audit and update third-party scripts and libraries to mitigate vulnerabilities.
  5. Provide clear and dedicated security contact channels for reporting incidents.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
idealo
Description
idealo is a price comparison platform offering over 100 million offers from more than 18,000 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
excellent
Branding
consistent

Technology

Stack
React (Preact), JavaScript ES6+, CSS Modules, Usercentrics CMP, Custom idealo CMP, XMLHttpRequest, IntersectionObserver
Frameworks
Next.js (React-based SSR framework)
Platforms
Web
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Secure cookie usage with SameSite=strict
  • Consent management platform for GDPR compliance
  • No exposed sensitive data in HTML
  • Secure login state management

Analytics and tracking

Services
Google Tag Manager
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Usercentrics CMP
Marketing tools
Usercentrics Consent Management
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 rich content and interactive features.
  2. No WHOIS data available from NIC.AT, indicating privacy protection or query limitation.
  3. Strong GDPR compliance with visible consent management.
  4. No direct contact emails or phone numbers found in HTML; contact via web form.
  5. No security.txt or explicit vulnerability disclosure found.
  6. Uses modern web technologies and frameworks.
  7. No suspicious or malicious content detected.
  8. Multiple localized versions and partner domains present.
Technical notes

Notes

idealo.at is built on a modern technology stack featuring React (Preact) and Next.js for server-side rendering, ensuring fast and SEO-friendly content delivery. The site uses CSS Modules for styling and integrates Usercentrics for consent management, reflecting a strong focus on privacy compliance. Performance optimizations include lazy loading of images and scripts, preconnect hints for critical domains, and responsive design for mobile devices. Accessibility features such as skip links and ARIA roles are implemented, enhancing usability. The technical infrastructure supports a scalable and maintainable platform, though hosting provider details are not explicitly identified. Overall, the technical implementation is robust, modern, and aligned with best practices.
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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