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Security report for biderundtanner.ch

Bider & Tanner · Retail · Switzerland

High risk. 4 critical or high findings in SSL/TLS, Security headers and 2 other checks.

Security score

47/100

Risk levelHigh

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

Bider & Tanner is a prominent bookstore and music house based in Basel, Switzerland, operating both a physical store and an online shop. The website showcases a wide range of books, music CDs, vinyl records, and cultural event tickets, positioning itself as a key cultural hub in the region. The business targets general consumers interested in literature, music, and cultural products, leveraging a retail e-commerce model complemented by physical store presence. The company enjoys a strong market position as the largest bookstore in Basel's Bankenplatz area.

Scanned

NIS2 and GDPR posture

GDPR outside view
73/ 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

4 findings rated critical or high. Fix these first.

  1. 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

      Unable to retrieve SSL certificate

      Could not establish secure connection to retrieve certificate information

      What to do: Check if the server is accessible and SSL/TLS is properly configured

  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 X-Frame-Options header

      Prevents clickjacking attacks

      What to do: Add "X-Frame-Options: DENY" or "X-Frame-Options: SAMEORIGIN"

  3. 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

  4. Network security

    Services reachable from the internet are the first thing attackers probe. Anything open that does not need to be should be closed.

    • High

      High-Risk Service Exposed: FTP

      Port 21 (FTP) is publicly accessible - FTP - Often unencrypted file transfer

      What to do: Consider restricting access to FTP or implementing strong authentication

      • NIS2 21(2)(e)
      • IR 2024/2690 6.7.2(f): Implementing Regulation (EU) 2024/2690, Annex point 6.7.2(f): Network security
      • NIST CM-7: NIST SP 800-53 Rev. 5 CM-7: Least Functionality
      • NIST SC-7: NIST SP 800-53 Rev. 5 SC-7: Boundary Protection

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

Keep watching biderundtanner.ch

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.

Daily monitoring

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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
50
Email security
60
DNS health
80
Network security
20
GDPR outside view
73
Average
47

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

The company operates in the retail sector with a focus on books and music, serving a broad audience including local residents and cultural enthusiasts. Its business model integrates product sales with event ticketing and additional services like SBB ticket counters. The website's detailed product catalog and user account features indicate a mature e-commerce operation. While no explicit partnerships or subsidiaries were identified, the presence of Google Tag Manager and other tracking tools suggests integration with common marketing and analytics ecosystems. The lack of explicit privacy and cookie policies represents a compliance gap that could impact customer trust and regulatory adherence.

Security posture

The website employs HTTPS with good SSL configuration and includes several important security headers such as HSTS, CSP, and X-Frame-Options, indicating a solid baseline security posture. Login forms are implemented with standard security practices, including autocomplete attributes and session timeout warnings. However, some broken image links and the absence of a security.txt file or vulnerability disclosure policy suggest areas for improvement. The lack of explicit privacy and cookie policies also indicates incomplete privacy compliance. Overall, the security maturity is good but could be enhanced by addressing these gaps.

Recommendations

  1. Publish comprehensive privacy and cookie policies to improve GDPR compliance and user trust.
  2. Fix broken image links to enhance user experience and reduce potential information leakage.
  3. Implement a security.txt file to facilitate responsible vulnerability disclosure.
  4. Enhance Content Security Policy with nonce or hash-based script whitelisting.
  5. Improve accessibility features to broaden audience reach and comply with standards.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Bider & Tanner
Description
Onlineshop der grössten Buchhandlung in Basel am Bankenplatz ✓ Buchhandlung ✓ Musikhaus ✓ Vorverkauf ✓ Vinyl und CDs
Key services
Book sales (physical and online), Music sales (CDs, vinyl, instruments), Ticket pre-sales, SBB ticket counter services
Content quality
good
Branding
consistent

Technology

Stack
JavaScript, jQuery 3.6.0, Google Tag Manager, Quagga barcode scanner, Flatpickr date picker, Select2 for enhanced selects
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
75/100
Good practices seen
  • HTTPS enforced
  • Secure login forms with autocomplete attributes
  • Session timeout warnings implemented

Analytics and tracking

Services
Google Analytics (via Google Tag Manager)
Tracking level
moderate
Privacy practices
poor

Advertising

Transparency
basic

Site quality

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

Key observations

  1. Website is a professional e-commerce platform for a well-established bookstore and music house in Basel, Switzerland.
  2. Content is rich with product listings for books and music, including detailed metadata and pricing.
  3. No privacy or cookie policies are explicitly found, indicating a compliance gap.
  4. Security posture is good with HTTPS and security headers but could improve with explicit policies and vulnerability disclosure.
  5. No contact emails or phone numbers explicitly found in the provided HTML snippet; contact likely available on other pages.
  6. Use of modern JavaScript libraries and tracking via Google Tag Manager is evident.
  7. No signs of adult or questionable content; content is safe for general audiences.
Technical notes

Notes

The website uses a modern JavaScript stack including jQuery 3.6.0, Google Tag Manager, Quagga barcode scanner, Flatpickr date picker, and Select2 for enhanced form controls. The CMS appears to be custom or proprietary, with no common CMS detected. Performance is moderate with some lazy loading and preloading optimizations. Mobile optimization is good, and SEO practices are evident through meta tags and structured navigation. Some technical debt is visible in broken image links and incomplete accessibility features. Hosting provider details are not explicit in the provided data.
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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