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Security report for jumbo.com

Jumbo Supermarkten · Retail · Netherlands

Medium risk. 3 critical or high findings in GDPR outside view, SSL/TLS and 1 other check.

Security score

68/100

Risk levelMedium

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

Jumbo Supermarkten is a leading Dutch supermarket chain offering a wide range of groceries with a strong emphasis on low prices, home delivery, and customer service. The website provides comprehensive services including online ordering, recipe inspiration, and personalized offers, positioning itself as a major player in the Dutch retail market. The technical infrastructure is modern, leveraging Nuxt.js and Vue.js frameworks, GraphQL APIs, and advanced analytics and monitoring tools such as Google Tag Manager, Datadog RUM, and SiteSpect. Security measures are robust with enforced HTTPS, responsible disclosure policies, and no visible vulnerabilities. The site is well-optimized for performance, mobile use, and accessibility, ensuring a high-quality user experience. Overall, the website reflects a mature digital presence aligned with the company's business goals and customer expectations.

Scanned

NIS2 and GDPR posture

GDPR outside view
63/ 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.

    • Critical

      No HTTPS encryption

      GDPR requires appropriate security measures for personal data

      What to do: Implement SSL/TLS certificate for HTTPS

  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.

    • Critical

      No HTTPS Encryption

      Website does not use HTTPS encryption, making all data transmission vulnerable to interception

      What to do: Implement SSL/TLS certificate and redirect all HTTP traffic to HTTPS

  3. 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 jumbo.com

This scan found 12 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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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
0
Security headers
80
Email security
80
DNS health
85
Network security
100
GDPR outside view
63
Average
68

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

Jumbo holds a strong market position in the Netherlands as a large retail supermarket chain with a comprehensive online platform. Its business model integrates physical stores with online shopping and delivery services, targeting Dutch consumers seeking convenience and value. The company emphasizes trust through its 7 Zekerheden guarantees and certifications like Thuiswinkel waarborg. Its partnership ecosystem includes loyalty programs and advertising platforms, enhancing customer engagement. The website's content and structure support a broad range of customer needs, from product discovery to order management, indicating a well-developed operational strategy.

Security posture

The website demonstrates a solid security posture with mandatory HTTPS, presence of security-related scripts for monitoring, and a dedicated responsible disclosure page. No critical vulnerabilities or exposed sensitive data were detected. However, explicit security headers like Referrer-Policy and Permissions-Policy are not clearly present and could be added to enhance security. Incident response contact channels are available, though could be more prominently displayed. Overall, the security maturity is high, supporting the business's operational integrity and customer trust.

Recommendations

  1. Implement explicit security headers such as Referrer-Policy and Permissions-Policy to strengthen security.
  2. Add a security.txt file to facilitate vulnerability reporting and improve transparency.
  3. Regularly audit and update third-party scripts to mitigate potential vulnerabilities.
  4. Enhance visibility of incident response contacts on the website for quicker reporting.
  5. Ensure all forms include anti-CSRF tokens and other input validation mechanisms.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Jumbo Supermarkten
Description
Ontdek het ruime assortiment van Jumbo! Altijd lage prijzen, boodschappen thuisbezorgen, heerlijke recepten, handige Jumbo app.
Key services
Online grocery shopping, Home delivery, Pick up points, Personalized offers, Recipe inspiration
Content quality
excellent
Branding
consistent

Technology

Stack
Nuxt.js, Vue.js, GraphQL, Google Tag Manager, Datadog RUM, SiteSpect, Boomerang, SiteSpect, Google Analytics (via GTM), CookieLaw.org (OneTrust)
Frameworks
Nuxt.js, Vue.js
Platforms
Web
Performance
fast
Mobile
excellent
Accessibility
good
SEO
excellent

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • No exposed sensitive data in HTML
  • Use of security-related scripts for monitoring
  • Responsible disclosure page present

Analytics and tracking

Services
Google Analytics (via GTM), Datadog RUM, SiteSpect
Tracking level
moderate
Privacy practices
good

Advertising

Ad networks
Google Ads
Tracking pixels
Datadog RUM, SiteSpect, Boomerang
Marketing tools
SiteSpect, Boomerang, Datadog RUM
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. Strong focus on user experience and mobile optimization.
  3. Comprehensive legal and privacy documentation present.
  4. Use of modern web technologies and analytics tools.
  5. Clear business information and multiple contact channels.
  6. Active social media presence with official accounts linked.
  7. Security posture is good with HTTPS and responsible disclosure.
  8. No signs of WAF or content blocking.
Technical notes

Notes

The website is built on a modern JavaScript framework stack (Nuxt.js and Vue.js) with GraphQL APIs for data fetching, ensuring efficient and dynamic content delivery. It integrates multiple analytics and monitoring tools, including Google Tag Manager, Datadog RUM, and SiteSpect, indicating a mature approach to performance and user behavior tracking. The site is well-optimized for mobile devices and accessibility, with comprehensive SEO meta tags and structured data. Performance is fast, and the technical implementation supports scalability and maintainability. Opportunities exist to further enhance security headers and streamline third-party script management.
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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