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Security report for tre.se

Hi3G Access AB · Telecommunications · Sweden

Medium risk. 5 critical or high findings in GDPR outside view and SSL/TLS.

Security score

56/100

Risk levelMedium

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

Tre Sverige, operated by Hi3G Access AB, is a major telecommunications provider in Sweden offering mobile subscriptions, broadband, and mobile devices. The company serves over 2.7 million customers and boasts a network covering 99.3% of the Swedish population. Their website is professionally designed, mobile-optimized, and integrates customer trust signals such as Trustpilot reviews. The technical infrastructure leverages modern frameworks like Next.js and Material UI, ensuring a responsive and accessible user experience. Security posture is strong with HTTPS enforced and cookie consent mechanisms in place, though some security headers and explicit incident response contacts could be improved. Overall, the website reflects a mature digital presence aligned with industry standards and regulatory compliance.

Scanned

NIS2 and GDPR posture

GDPR outside view
15/ 100 · Critical
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

5 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

      EU business without adequate privacy measures

      EU businesses are subject to strict GDPR requirements

      What to do: Implement comprehensive GDPR compliance including privacy policy, cookie consent, and data protection measures

    • Critical

      No HTTPS encryption

      GDPR requires appropriate security measures for personal data

      What to do: Implement SSL/TLS certificate for HTTPS

    • High

      No Privacy Policy found

      GDPR requires a clear and accessible privacy policy

      What to do: Add a comprehensive privacy policy page and link to it prominently

    • 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 tre.se

This scan found 18 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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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
70
Email security
80
DNS health
70
Network security
100
GDPR outside view
15
Average
56

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

Tre Sverige holds a strong market position as a large telecommunications operator in Sweden, targeting both consumers and businesses. Their business model centers on providing mobile and broadband services bundled with devices from leading brands like Apple, Samsung, and Google. The company emphasizes customer-centric offerings such as family plans and international roaming. The website content and structure support clear navigation and product discovery, enhancing customer engagement. Partnerships include integration with Trustpilot for customer feedback and Google for search capabilities. The company demonstrates growth potential through competitive pricing and service innovation.

Security posture

The website exhibits a solid security foundation with HTTPS encryption and cookie consent dialogs that comply with GDPR. No exposed sensitive data or vulnerable libraries were detected in the HTML content. However, the absence of certain security headers (e.g., Content-Security-Policy) and lack of a published security.txt file or explicit incident response contacts represent areas for enhancement. The site does not display any known vulnerabilities or malware indicators. Overall, the security maturity is good but could benefit from additional transparency and technical controls to further mitigate risks.

Recommendations

  1. Implement comprehensive security headers including Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security.
  2. Publish a security.txt file to facilitate vulnerability disclosures and improve transparency.
  3. Provide explicit incident response contact information such as security@ or abuse@ email addresses.
  4. Regularly audit and update third-party scripts to minimize potential vulnerabilities.
  5. Enhance data retention policy disclosures and cookie management transparency to strengthen privacy compliance.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Hi3G Access AB
Description
Tre Sverige offers mobile subscriptions, broadband, and the latest mobile phones. Their network covers 99.3% of Sweden's population (voice coverage based on registered address).
Key services
Mobile subscriptions, Broadband services, Mobile devices and accessories
Content quality
excellent
Branding
consistent

Technology

Stack
React, Next.js, Material UI, Google Custom Search Engine
Frameworks
Next.js, Material UI
Platforms
Web
Performance
moderate
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Cookie consent dialog with options
  • No exposed sensitive data in HTML
  • Secure login portals

Analytics and tracking

Tracking level
moderate
Privacy practices
good

Advertising

Marketing tools
Google Custom Search Engine
Transparency
basic

Site quality

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

Key observations

  1. Website is professionally designed and mobile-optimized.
  2. Clear navigation with dedicated sections for products, support, and company info.
  3. Comprehensive privacy and cookie policies with consent mechanisms.
  4. Use of modern web technologies and frameworks.
  5. Trustpilot integration shows positive customer feedback.
  6. No signs of blocking or WAF interference.
  7. No exposed sensitive data or obvious security vulnerabilities in HTML.
  8. No explicit incident response or security contact emails found.
  9. No visible security certifications displayed on the site.
Technical notes

Notes

The website is built on a modern React-based framework (Next.js) with Material UI for styling, ensuring responsive design and good accessibility. It uses Google Custom Search for site search functionality and integrates Trustpilot widgets for customer reviews. The site loads multiple JavaScript chunks asynchronously, indicating modular and optimized code delivery. Performance is moderate with room for improvement in loading speed and caching strategies. No CMS is explicitly detected, suggesting a custom or headless CMS approach. Hosting provider details are not evident from the HTML content. Overall, the technical implementation supports a robust and scalable digital platform.
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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