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Security report for leaseweb.com

Leaseweb · Technology · Netherlands

Medium risk. 6 critical or high findings in Security headers and GDPR outside view.

Security score

72/100

Risk levelMedium

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

Leaseweb is a well-established Infrastructure-as-a-Service (IaaS) provider founded in 1997, offering a broad portfolio of cloud, dedicated server, colocation, network, and managed services globally. The company targets enterprise and business customers requiring reliable and scalable infrastructure solutions. Their market position is strong, supported by a global network of data centers and a comprehensive service catalog. Technically, the website is built on a modern Angular framework with integrations such as HubSpot forms and Google Tag Manager, indicating a mature digital infrastructure. The site is mobile-optimized, accessible, and SEO-friendly, reflecting good digital maturity. Security-wise, Leaseweb demonstrates solid practices including HTTPS enforcement, ISO 27001 certification, and clear abuse handling policies. However, the absence of publicly available WHOIS data is an anomaly that slightly impacts trust but does not detract from the overall legitimacy given the company's visible transparency and professionalism. Overall, Leaseweb presents a low-risk profile with strong business credibility and technical robustness.

Scanned

NIS2 and GDPR posture

GDPR outside view
50/ 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 Strict-Transport-Security header

      Forces HTTPS connections

      What to do: Add "Strict-Transport-Security: max-age=31536000; includeSubDomains; preload"

      • CWE-319
      • OWASP A04:2025
      • ASVS V3.4.1
    • 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 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

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

Keep watching leaseweb.com

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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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
20
Email security
80
DNS health
90
Network security
100
GDPR outside view
50
Average
72

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

Leaseweb operates in the technology sector as an essential enterprise entity providing IaaS and cloud infrastructure services. Their competitive advantage lies in their global footprint, diverse product offerings, and certifications such as ISO 27001. Revenue streams likely include dedicated server rentals, cloud services, colocation, and managed security services. The target customer segments are enterprises and businesses requiring scalable and secure infrastructure. The company maintains a strong partnership ecosystem, including developer APIs and knowledge bases, enhancing customer engagement and support. Strategic observations highlight Leaseweb's focus on compliance, security, and customer-centric services, positioning them well in a competitive market.

Security posture

Leaseweb exhibits a mature security posture with HTTPS enforced site-wide, presence of security and certification information, and policies addressing abuse and customer verification. The company holds ISO 27001 certification, indicating adherence to international security standards. No critical vulnerabilities or exposed sensitive data were detected in the website content. However, explicit security headers were not fully confirmed in the HTML, and no public vulnerability disclosure program was found, suggesting areas for improvement. Incident response contact channels are available, supporting readiness. Compliance with GDPR is indicated through privacy and cookie policies. Overall, the security maturity is high with minor gaps in transparency and header implementation.

Recommendations

  1. Publish or link to a formal vulnerability disclosure or bug bounty program to enhance security transparency.
  2. Verify and explicitly implement all recommended security headers such as Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options.
  3. Enhance incident response visibility by providing direct security contact emails on the website.
  4. Regularly audit third-party scripts and integrations to mitigate supply chain risks.
  5. Maintain updated WHOIS information or clarify domain privacy usage to improve trust signals.

Contact details published on the site

Addresses
Legal name
Leaseweb
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Leaseweb
Description
Leaseweb is an Infrastructure-as-a-Service (IaaS) provider that offers Dedicated Servers, CDN, and Cloud Hosting solutions in a worldwide network.
Key services
Dedicated Servers, Cloud Services, Colocation, Network & CDN, Web Hosting, Managed Services
Content quality
excellent
Branding
consistent

Technology

Stack
Angular (ng-version=19.2.15), HubSpot forms, FontAwesome, Google Fonts, VeriSign SSL (implied by HTTPS), Custom CSS and JS
Frameworks
Angular
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Security & Certifications page present
  • Abuse handling and KYC policies available
  • No exposed sensitive data found in HTML

Analytics and tracking

Services
Google Tag Manager
Tracking level
moderate
Privacy practices
good

Advertising

Marketing tools
HubSpot forms
Transparency
good

Site quality

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

Key observations

  1. Website is fully accessible with rich content and navigation.
  2. Strong presence of structured data and SEO best practices.
  3. Multiple contact points and comprehensive legal documentation.
  4. No signs of malicious or suspicious content.
  5. WHOIS data absence is a notable anomaly.
Technical notes

Notes

The website is built on Angular 19, indicating use of a modern JavaScript framework supporting dynamic and responsive content. Integration with HubSpot forms and Google Tag Manager shows use of advanced marketing and analytics tools. The site uses custom CSS and fonts from Google Fonts and FontAwesome icons, contributing to a professional and consistent design. Hosting is likely on Leaseweb's own infrastructure, supporting performance and control. The site is mobile-optimized and accessible, with good SEO practices including meta tags and structured data. Performance is moderate, with potential for optimization in loading speed and script management. Technical risks are low but include dependency on third-party services and incomplete security header visibility.
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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