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Security report for telenet.be

Telenet · Telecommunications · Belgium

Low risk. 1 critical or high finding in Security headers.

Security score

83/100

Risk levelLow

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

Telenet is a major Belgian telecommunications provider offering a range of residential and business services including high-speed internet, mobile telephony, and digital TV. The website is professionally designed, well-branded, and targets both residential customers and businesses in Belgium. The technical infrastructure leverages modern web technologies such as Adobe Experience Manager CMS, Adobe DTM for tag management, Dynatrace for performance monitoring, and OneTrust for cookie consent management, indicating a mature digital presence. Security posture is solid with HTTPS enforced and privacy compliance mechanisms in place, although explicit security headers and incident response information are not evident. The absence of WHOIS data reduces transparency but is consistent with .be domain privacy policies. Overall, the website is trustworthy and professionally maintained, with room for improvement in explicit security disclosures and contact information availability.

Scanned

NIS2 and GDPR posture

GDPR outside view
88/ 100 · Low
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

1 finding 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"

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

Keep watching telenet.be

This scan found 14 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
90
Security headers
60
Email security
83
DNS health
75
Network security
100
GDPR outside view
88
Average
83

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

Telenet holds a leading position in the Belgian telecommunications market, providing integrated internet, mobile, and TV services. Their business model focuses on bundled offerings for residential customers and tailored solutions for businesses. The company demonstrates strong branding consistency and uses advanced marketing and analytics tools to optimize user engagement. The website reflects a large enterprise with a comprehensive service portfolio, targeting a broad customer base. Partnerships and external domains mainly relate to technology and analytics providers rather than business partners. The lack of visible contact details on the main page suggests contact information may be located deeper within the site or via customer portals.

Security posture

The website enforces HTTPS and uses cookie consent management compliant with GDPR, reflecting a good security baseline. However, the absence of explicit security headers such as Content Security Policy, HSTS, and X-Frame-Options is a gap that could be addressed to enhance protection against common web attacks. No vulnerabilities or exposed sensitive data were detected in the HTML content. The lack of published security policies, incident response contacts, or vulnerability disclosure programs limits transparency and user trust in security responsiveness. Overall, the security posture is good but could be improved with more explicit security documentation and headers.

Recommendations

  1. Implement and publish explicit security headers including CSP, HSTS, and X-Frame-Options to strengthen web security.
  2. Provide clear security policy and incident response contact information accessible from the website.
  3. Establish and publicize a vulnerability disclosure program or security.txt file to encourage responsible reporting.
  4. Enhance accessibility features to improve compliance and user experience for all users.
  5. Increase transparency by providing clear contact information including company emails and phone numbers on the website.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Telenet
Description
Internet, met/zonder mobiel, met/zonder digitale tv. Creëer een totaalbeleving met entertainment. Alsook business internet & telefonie voor bedrijven.
Key services
Internet services, Mobile telephony, Digital TV, Business internet and telephony
Content quality
good
Branding
consistent

Technology

Stack
JavaScript, jQuery, OneTrust Cookie Consent, Adobe Dynamic Tag Manager, Dynatrace Real User Monitoring, Wink Web Components, AEM (Adobe Experience Manager) CMS
Frameworks
Wink Web Components, Adobe DTM
Platforms
Adobe Experience Manager, Dynatrace
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Use of cookie consent mechanism
  • No exposed sensitive data in HTML

Analytics and tracking

Services
Adobe Analytics, Dynatrace Real User Monitoring
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Adobe DTM, Dynatrace
Marketing tools
Adobe DTM, OneTrust
Transparency
good

Site quality

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

Key observations

  1. Website is fully accessible with rich content
  2. Strong use of modern web technologies and consent management
  3. No direct contact emails or phone numbers found in provided HTML
  4. WHOIS data is restricted, limiting domain registration transparency
  5. Good privacy and cookie compliance mechanisms in place
  6. No security policy or incident response contacts explicitly found
  7. No vulnerability disclosure or security.txt detected
Technical notes

Notes

The website uses a modern technology stack including Adobe Experience Manager CMS, Wink Web Components, Adobe DTM for tag management, and Dynatrace for performance monitoring. The site is mobile optimized with responsive design and uses OneTrust for cookie consent management, indicating compliance with privacy regulations. Performance is moderate with some opportunities for optimization. Accessibility is basic but could be improved. The site does not expose sensitive data and uses HTTPS exclusively. The technical implementation is solid and reflects a mature enterprise digital presence.
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

Earlier scans of this domain

  1. 48/100High26 findingsView report
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