Duffel Technology Ltd. · Technology · United Kingdom
Low risk. 3 critical or high findings in Security headers, GDPR outside view and 1 other check.
Duffel Technology Ltd. operates a sophisticated travel API platform enabling businesses, from startups to large enterprises, to search, book, and manage flights, stays, and travel ancillaries. Positioned as a leading technology provider in the travel sector, Duffel offers comprehensive developer tools, including client libraries and prebuilt components, facilitating seamless integration and user experience. The company is UK-based with a domain age consistent with its business maturity, and it maintains a professional online presence with strong branding and customer trust signals. Technically, the website leverages modern frameworks such as Next.js and React, hosted on Google Cloud infrastructure with Storyblok CMS for content management. The site is fast, mobile-optimized, and accessible, with good SEO practices. Security posture is solid with HTTPS enforcement and domain protection statuses, though DNSSEC is not enabled and no public vulnerability disclosure policy is found. Security-wise, Duffel demonstrates good practices but could enhance transparency by publishing incident response contacts and security.txt files. Privacy compliance is well addressed with clear policies and cookie consent mechanisms. No critical vulnerabilities or exposed sensitive data were detected. Overall, the website reflects a mature, trustworthy business with a strong technical foundation and compliance awareness. Strategically, Duffel should consider enabling DNSSEC, formalizing vulnerability disclosure, and expanding incident response visibility to further strengthen security and trust. These steps will support continued growth and reassure enterprise clients of their commitment to security and compliance.
Scanned
NIS2 Art. 21(2)
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.
3 findings rated critical or high. Fix these first.
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.
Controls resources the browser is allowed to load
What to do: Implement a Content-Security-Policy appropriate for your application
These are the privacy signals visitors and data protection authorities look for under GDPR.
GDPR requires explicit consent for non-essential cookies
What to do: Implement a cookie consent banner that appears on first visit
TLS encrypts the connection and proves the site is really yours. Weak or expiring certificates trigger browser warnings and put traffic at risk.
Server supports weak protocols: TLSv1.1
What to do: Disable TLS 1.0, TLS 1.1, and all SSL versions
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This scan found 17 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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Each check with its score, findings and the evidence it collected.
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
Not counted
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.
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
Leaked credentials and lookalike domains from OffSeq Breach. The counts are free; the detailed lists are paid add-ons.
Leaked records that mention duffel.com, from OffSeq Breach.
2 subdomains affected
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Breach keeps ingesting new leaks, so these numbers can grow between scans.
Business context, site observations and technical notes gathered during the scan, and the standards behind each reference.
Automated reading of the public site. Ratings are indicative.
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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