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Security report for sl.se

Region Stockholm · Transportation · Sweden

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

Security score

68/100

Risk levelMedium

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

SL (Storstockholms Lokaltrafik) operates the public transportation network in Stockholm County, Sweden, providing metro, bus, train, tram, and boat services. The website serves as a comprehensive portal for travel planning, ticketing, traffic updates, and customer support, targeting residents and visitors of Stockholm. The business is a large, government-affiliated entity with a strong market position as the primary transit provider in the region. The website content is rich, professionally presented, and accessible, supporting multiple languages and accessibility needs. Technically, the site is built on modern web technologies including React and Next.js, hosted on Microsoft Azure with good performance and mobile optimization. The use of Contentful CMS is inferred, enabling dynamic content management. Security practices include HTTPS enforcement, standard security headers, and cookie consent mechanisms, although DNSSEC is not enabled and no explicit security.txt or incident response contacts are published. The security posture is strong with no evident vulnerabilities or exposed sensitive data. Privacy compliance is well addressed with clear privacy and cookie policies, GDPR adherence, and user consent mechanisms. Business credibility is high, supported by official regional government affiliation, clear contact channels, and trust signals such as social media presence and comprehensive content. Overall, SL.se is a trustworthy, well-maintained, and user-friendly website that effectively supports its public transportation mission. Minor improvements could include enabling DNSSEC, publishing a security.txt file, and providing explicit incident response contacts to further enhance security transparency and readiness.

Scanned

NIS2 and GDPR posture

GDPR outside view
25/ 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

    • 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 Policy found

      GDPR requires clear information about cookie usage

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

    • High

      Third-party services without privacy policy

      Detected services: Facebook, YouTube

      What to do: Document all third-party data sharing in your privacy policy

  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.

    • 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 sl.se

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
69
Security headers
95
Email security
55
DNS health
65
Network security
100
GDPR outside view
25
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

SL operates as a government-owned public transportation provider in Stockholm County, serving a large and diverse customer base including daily commuters, tourists, and regional travelers. Its business model relies on ticket sales and regional funding. The website reflects a mature digital presence with integrated travel planning tools, real-time traffic updates, and customer service features. Partnerships with related transportation and cultural entities (e.g., Waxholmsbolaget, Spårvägsmuseet) enhance service offerings. The company demonstrates strategic focus on accessibility, environmental sustainability, and customer engagement through multiple communication channels and social media. Growth indicators include ongoing infrastructure upgrades and digital enhancements. The website's comprehensive content and frequent updates indicate active management and responsiveness to user needs. The partnership ecosystem supports a cohesive regional transport network, reinforcing SL's market leadership.

Security posture

The website exhibits a mature security posture with HTTPS enforced and multiple security headers implemented, reducing risks of common web attacks. The cookie consent banner aligns with privacy regulations, and no sensitive data leakage was detected in the HTML content. The absence of DNSSEC is a minor security gap that could be addressed to improve DNS integrity. No vulnerability disclosure or incident response information is publicly available, which could limit transparency and rapid response capabilities. The site uses modern frameworks and libraries with no known vulnerabilities detected in the provided content. Overall, SL.se demonstrates good security hygiene appropriate for a public sector service website.

Recommendations

  1. Enable DNSSEC on the domain to enhance DNS security and prevent spoofing.
  2. Publish a security.txt file to provide clear vulnerability disclosure and incident response contacts.
  3. Add a dedicated security policy page outlining security practices and user guidance.
  4. Regularly audit and update third-party scripts and dependencies to mitigate potential vulnerabilities.
  5. Enhance transparency by providing explicit incident response contact channels for security issues.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Region Stockholm
Description
SL provides public transportation services in Stockholm County including metro, buses, trains, trams, and boats. The website offers travel planning, ticket information, traffic updates, and customer service.
Key services
Journey planning, Ticket sales and information, Traffic updates and alerts, Customer support
Content quality
excellent
Branding
consistent

Technology

Stack
React, Next.js, Azure Front Door, JavaScript, CSS Modules
Frameworks
Next.js
Platforms
Azure
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
90/100
Good practices seen
  • HTTPS enforced
  • Cookie consent banner implemented
  • No exposed sensitive data in HTML
  • Secure forms with proper labels and ARIA attributes

Analytics and tracking

Tracking level
moderate
Privacy practices
good

Advertising

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 well maintained.
  2. Content is comprehensive and relevant to public transport users.
  3. Strong focus on accessibility and multilingual support.
  4. No signs of malicious or suspicious activity.
  5. Good integration with social media and external partner sites.
Technical notes

Notes

SL.se is built using React and Next.js frameworks, leveraging server-side rendering and modern JavaScript for performance and SEO benefits. The site is hosted on Microsoft Azure, utilizing Azure Front Door CDN for global delivery and performance optimization. Contentful CMS is used for content management, enabling dynamic and structured content updates. The website employs CSS modules for styling and includes accessibility features such as ARIA labels and keyboard navigation aids. Performance is optimized with preloading of critical CSS and scripts. The site is mobile responsive and supports multiple languages including Swedish and English. No major technical debt or outdated technologies were detected, indicating a modern and maintainable infrastructure.
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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