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Security report for quickline.ch

Quickline AG · Telecommunications · Switzerland

Medium risk. 6 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

68/100

Risk levelMedium

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

Quickline AG is a well-established Swiss telecommunications provider offering a comprehensive range of services including Internet, TV, fixed-line telephony, and mobile communications. The company targets both private and business customers across Switzerland, emphasizing simplicity, flexibility, and competitive pricing. Their market position is reinforced by multiple industry awards and a strong customer service reputation. Technically, the website is built on modern frameworks such as Nuxt.js and uses a headless CMS (Storyblok), ensuring a fast, responsive, and accessible user experience. Privacy compliance is robust with clear policies and a consent management platform in place. Security posture is strong with HTTPS enforcement and appropriate security headers, although there is room for improvement in publishing explicit security policies and incident response information. Overall, the website reflects a professional and trustworthy business with a high level of digital maturity.

Scanned

NIS2 and GDPR posture

GDPR outside view
53/ 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

6 findings rated critical or high. Fix these first.

  1. 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"

    • 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';…

  2. GDPR outside view

    These are the privacy signals visitors and data protection authorities look for under GDPR.

    • High

      No Cookie Policy found

      GDPR requires clear information about cookie usage

      What to do: Add a dedicated cookie policy explaining cookie usage and purposes

    • 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

  3. 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

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

Keep watching quickline.ch

This scan found 22 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
62
Security headers
30
Email security
70
DNS health
90
Network security
100
GDPR outside view
53
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

Quickline operates in the telecommunications sector with a focus on bundled service offerings and device sales. Their competitive advantages include nationwide coverage, award-winning customer service, and attractive pricing models such as combo discounts. The business model relies on subscription services for Internet, TV, mobile, and fixed-line telephony, supplemented by smartphone and accessory sales. The company maintains a strong partnership ecosystem evident from related domains and social media presence. Growth indicators include active marketing campaigns and a comprehensive online presence. Strategic observations suggest continued investment in digital infrastructure and customer engagement to maintain market position.

Security posture

The website demonstrates a mature security posture with HTTPS enforced and multiple security headers implemented. The use of a consent management platform aligns with GDPR requirements, and no exposed sensitive data or vulnerable libraries were detected. However, the absence of a dedicated security policy or incident response contact information represents a compliance gap. No vulnerability disclosure or security.txt file was found, which could enhance transparency and trust. Overall, the security measures are appropriate for the business scale but could be improved by formalizing security governance documentation and incident handling procedures.

Recommendations

  1. Publish a dedicated security policy page outlining security practices and commitments.
  2. Provide explicit incident response contact channels such as security@ or abuse@ email addresses.
  3. Implement and publish a vulnerability disclosure policy or security.txt file to encourage responsible reporting.
  4. Regularly review and audit third-party scripts and libraries for security vulnerabilities.
  5. Enhance accessibility features to improve compliance with standards and user experience.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Quickline AG
Description
Quickline is a Swiss telecommunications provider offering Internet, TV, fixed-line, and mobile services for private and business customers across Switzerland. They emphasize simplicity, flexibility, and competitive pricing.
Key services
Internet, TV, Festnetz (fixed-line telephony), Mobile services, Smartphones and accessories
Content quality
excellent
Branding
consistent

Technology

Stack
Vue.js (Nuxt.js framework), Usercentrics CMP, Google Tag Manager, Varify.io, Storyblok CMS
Frameworks
Nuxt.js
Platforms
Web
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
90/100
Good practices seen
  • HTTPS enforced
  • Use of security headers
  • Consent management for cookies
  • No exposed sensitive data in HTML

Analytics and tracking

Services
Google Tag Manager, Datadog (browser-intake-datadoghq.eu)
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Varify.io
Marketing tools
Usercentrics CMP
Transparency
good

Site quality

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

Key observations

  1. Website is professionally designed and well-structured.
  2. Clear navigation with dedicated sections for private and business customers.
  3. Multiple trust signals including awards and customer testimonials.
  4. Comprehensive privacy and cookie policies with consent management.
  5. Use of modern web technologies and frameworks.
  6. No signs of malicious or suspicious activity.
  7. Social media presence on major platforms.
  8. No visible security policy or incident response page.
  9. No vulnerability disclosure or security.txt found.
Technical notes

Notes

The website leverages a modern technology stack including Vue.js with Nuxt.js for server-side rendering and Storyblok as a headless CMS, enabling efficient content management and fast page loads. Integration with Usercentrics CMP ensures compliance with cookie regulations. Analytics and tracking are managed via Google Tag Manager and Varify.io, with performance optimized for mobile and desktop. The site exhibits good SEO practices with proper meta tags and Open Graph data. No significant technical debt or outdated technologies were detected. Opportunities exist to further enhance accessibility and formalize security-related technical documentation.
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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