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Security report for bestseller.com

BESTSELLER · Retail · Denmark

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

Security score

59/100

Risk levelMedium

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

BESTSELLER is a well-established international fashion retailer with a broad global footprint, operating over 2,800 stores and multiple brands. The company targets a diverse consumer base with fashionable apparel and accessories. The website demonstrates good digital maturity with modern technologies such as Google Tag Manager, Umbraco CMS, and a comprehensive cookie consent mechanism. However, the absence of a valid SSL certificate and HTTPS support is a critical security gap that undermines user trust and data protection. The site is well-structured, accessible, and SEO-optimized, with active social media engagement. Privacy compliance is strong with detailed cookie and privacy policies aligned with GDPR requirements. WHOIS data confirms the domain's maturity and legitimacy. Strategic improvements in security posture are essential to elevate the overall risk profile.

Scanned

NIS2 and GDPR posture

GDPR outside view
33/ 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

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

    • 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.

    • 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

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

Keep watching bestseller.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.

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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
0
Security headers
85
Email security
50
DNS health
85
Network security
100
GDPR outside view
33
Average
59

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

BESTSELLER holds a strong market position as a large enterprise in the retail fashion sector, with a multi-brand and multi-channel business model including retail stores and wholesale. The company emphasizes sustainability and community engagement, as evidenced by news and reports on their site. Their marketing ecosystem includes major platforms like Facebook and LinkedIn, and they utilize advanced analytics tools. The absence of direct contact information on the website suggests a focus on digital engagement and possibly centralized customer service channels. The domain's long history and consistent registration details support the company's credibility.

Security posture

The website's security posture is currently weak due to the lack of HTTPS and SSL certificate, absence of security headers, and missing advanced TLS features such as HSTS and OCSP stapling. While no known vulnerabilities or malware are detected, these gaps expose users to potential risks such as data interception and man-in-the-middle attacks. The cookie consent mechanism is robust and GDPR-compliant, indicating good privacy practices. No incident response or vulnerability disclosure policies are publicly available, which could hinder timely security issue management. Immediate remediation of SSL and security headers is recommended to improve trust and compliance.

Recommendations

  1. Install and configure a valid SSL/TLS certificate to enable HTTPS across the entire website.
  2. Implement essential security headers including Content-Security-Policy, X-Frame-Options, X-Content-Type-Options, and Referrer-Policy.
  3. Enable HTTP Strict Transport Security (HSTS) with includeSubDomains and preload directives.
  4. Publish a security policy and incident response contact information to enhance transparency and preparedness.
  5. Consider adding a vulnerability disclosure or security.txt file to facilitate responsible reporting.
Technical notes

Notes

The website is built on a modern tech stack including Umbraco CMS and ASP.NET framework, hosted likely via Fastly CDN. It uses Google Tag Manager and CookieInformation for analytics and consent management. Performance is slow with a load time of over 13 seconds and a large page size (~830 KB). Mobile optimization and accessibility are good, with responsive design and focus management in modals. SEO is well implemented with canonical tags, meta descriptions, and Open Graph data. Technical debt is moderate due to missing HTTPS and security headers, which should be prioritized for remediation.
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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