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Security report for opodo.com

Opodo · Transportation · United Kingdom

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

Security score

73/100

Risk levelMedium

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

Opodo is a large, well-established online travel agency headquartered in the United Kingdom with a parent company eDreams ODIGEO. The company offers a comprehensive suite of travel services including flights, hotels, car rentals, holiday packages, and transfers. It targets a broad audience of travelers seeking competitive prices and convenience through an easy-to-use online platform. The website is professionally designed with consistent branding and multilingual support, reflecting its international market presence. Technically, the website employs modern web technologies such as React, RequireJS, and integrates with Google Analytics and Tag Manager for data collection and marketing. It supports service workers for progressive web app capabilities and provides mobile app downloads for iOS and Android. Performance is moderate with good mobile optimization and basic accessibility features. From a security perspective, the site enforces HTTPS and uses Content-Security-Policy headers, anonymizes IPs in analytics, and avoids exposing sensitive data. However, additional security headers and a public security policy or vulnerability disclosure page are absent. Privacy compliance is strong with clear privacy and cookie policies and consent mechanisms in place. Contact information and legal disclosures are transparent, enhancing trust. Overall, the website presents a low-risk profile with strong business credibility and technical maturity. The lack of WHOIS data is a minor concern but likely due to privacy protection. Strategic recommendations include enhancing security headers, publishing a security policy, and improving accessibility to further strengthen the security posture and user trust.

Scanned

NIS2 and GDPR posture

GDPR outside view
68/ 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 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 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
    • 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 opodo.com

This scan found 20 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

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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
47
Security headers
85
Email security
60
DNS health
80
Network security
100
GDPR outside view
68
Average
73

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

Opodo operates as a major player in the online travel agency sector, leveraging its parent company eDreams ODIGEO's extensive network and subsidiaries. Its business model focuses on aggregating and comparing travel options to offer competitive pricing and convenience. Revenue streams likely include commissions from airlines, hotels, car rental companies, and advertising partnerships. The company targets a global customer base with localized websites and multiple language options. Its competitive advantages include a broad inventory, best price guarantee, and integrated mobile app experience. The presence of awards and accreditations supports its market reputation. Partnerships with major travel brands and advertising networks enhance its ecosystem. Growth indicators include continuous technology updates and marketing investments.

Security posture

The website demonstrates a mature security posture with mandatory HTTPS, Content-Security-Policy headers, and anonymized analytics tracking. No critical vulnerabilities or exposed sensitive data were detected in the HTML content. However, the absence of additional security headers such as Strict-Transport-Security and X-Frame-Options suggests room for improvement. There is no publicly available incident response or vulnerability disclosure information, which could enhance transparency and trust. Privacy policies and cookie consent mechanisms align with GDPR requirements, indicating compliance focus. Overall, the security culture appears proactive but could benefit from formalized security documentation and broader header implementation.

Recommendations

  1. Implement additional HTTP security headers including Strict-Transport-Security, X-Frame-Options, and X-Content-Type-Options to harden security.
  2. Publish a dedicated security policy and incident response page to improve transparency and user trust.
  3. Create and maintain a vulnerability disclosure program or security.txt file to encourage responsible reporting.
  4. Enhance website accessibility features to comply with WCAG standards and improve user experience for all visitors.
  5. Regularly audit and update third-party scripts and libraries to mitigate risks from vulnerable dependencies.

Contact details published on the site

Addresses
Legal name
Vacaciones eDreams, S.L. Sociedad unipersonal
Registration number
Volume 36897, Sheet 121 Page M-660117
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Opodo
Description
Find the best deals on cheap flights, hotels and holidays with the handy Opodo price comparison tool. Book your low cost holiday or city break with us now!
Key services
Flight bookings, Hotel bookings, Flight + Hotel packages, Car rentals, Shuttles and transfers, Holiday rentals
Content quality
good
Branding
consistent

Technology

Stack
RequireJS, Google Analytics, Google Tag Manager, Genesys Webchat, React (implied by reactContext and react-app div), Service Workers
Frameworks
React
Platforms
Web, Android app, iOS app
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Content-Security-Policy header present
  • Anonymize IP in Google Analytics
  • No exposed sensitive data in HTML

Analytics and tracking

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

Advertising

Ad networks
Google DoubleClick, TagCommander
Marketing tools
Marketing Channel Service, Google One Tap Sign-In
Transparency
good

Site quality

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

Key observations

  1. Website is fully accessible with rich content and interactive features.
  2. Strong branding and consistent user interface.
  3. Multiple language and country versions available.
  4. Comprehensive travel booking services offered.
  5. Good use of modern web technologies and analytics.
  6. No signs of phishing or malware.
  7. Contact information and legal pages are clearly linked.
  8. No explicit or adult content detected.
  9. Security headers partially implemented; room for improvement.
  10. WHOIS data unavailable, but other trust signals strong.
Technical notes

Notes

The website uses a modern JavaScript stack with React and RequireJS for modular loading. It integrates Google Analytics and Tag Manager for comprehensive user behavior tracking and marketing analytics. Service workers enable progressive web app features, improving mobile experience. The site is multilingual with country-specific versions and currency support, indicating a scalable international infrastructure. Performance is moderate with prefetching and preloading of scripts and assets. Accessibility is basic but could be improved. No CMS was explicitly detected, suggesting a custom or proprietary platform. Hosting provider details are not disclosed. Overall, the technical infrastructure supports a robust and user-friendly travel booking platform with opportunities for optimization and enhanced security.
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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