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Security report for speedtest.net

Ookla · Technology · United States

Medium risk. 4 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

73/100

Risk levelMedium

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

Speedtest.net, operated by Ookla, is a leading global platform providing internet speed testing services accessible via web and multiple mobile and desktop applications. The website offers comprehensive tools for measuring broadband speed and network performance, targeting general internet users and professionals alike. The platform enjoys a strong market position with a well-established brand and extensive service offerings including research, awards, and performance directories. Technically, the website employs a modern technology stack including JavaScript frameworks, AWS AppSync, Firebase, and integrates multiple advertising and analytics services. The site is hosted by Hetzner Online and demonstrates fast performance, excellent mobile optimization, and good accessibility and SEO practices. From a security perspective, the site enforces HTTPS, implements key security headers, and avoids exposing sensitive data. However, it lacks a dedicated security policy page and explicit incident response contact information. Privacy compliance is robust with clear privacy and cookie policies and consent mechanisms, reflecting GDPR adherence. Overall, the website presents a low risk profile with strong business credibility and technical maturity. Strategic recommendations include publishing a security policy, establishing a vulnerability disclosure program, and enhancing transparency on data retention and incident response to further strengthen trust and security posture.

Scanned

NIS2 and GDPR posture

GDPR outside view
73/ 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

4 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

  2. GDPR outside view

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

    • 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
    • High

      Weak SSL Key Length

      SSL certificate uses 256-bit key, which is considered weak

      What to do: Use at least 2048-bit RSA or 256-bit ECC key

      • CWE-326
      • OWASP A04:2025
      • Mozilla TLS: Mozilla Server Side TLS 6.0 intermediate: rsa_key_size 2048

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

Keep watching speedtest.net

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.

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
52
Security headers
45
Email security
85
DNS health
85
Network security
100
GDPR outside view
73
Average
73

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

Ookla's Speedtest.net operates as a freemium business model with advertising and subscription options, serving a broad audience of internet users seeking to test their broadband speeds. The company leverages partnerships with major advertising networks and analytics providers to monetize its platform. The brand is consistent and professional, with a clear focus on technology and network performance. The absence of direct contact information on the main site suggests a focus on self-service and digital engagement. The platform's extensive language support and global reach indicate a mature and scalable operation with significant market penetration.

Security posture

The website demonstrates a mature security posture with enforced HTTPS, comprehensive security headers, and secure handling of user inputs. No vulnerabilities or exposed sensitive data were detected in the analyzed content. However, the lack of a public security policy and incident response contact reduces transparency and may impact user trust in security matters. There is no evidence of a vulnerability disclosure program or security.txt file, which are recommended best practices. Privacy compliance is well addressed with GDPR-aligned policies and consent mechanisms. Overall, the security maturity is good but could be improved with enhanced transparency and formalized disclosure processes.

Recommendations

  1. Publish a dedicated security policy page outlining security practices and commitments.
  2. Establish and publicize a vulnerability disclosure program to encourage responsible reporting.
  3. Provide explicit incident response contact information, such as security@ or abuse@ emails.
  4. Enhance transparency on data retention policies and user data handling.
  5. Regularly audit and update third-party scripts and advertising integrations to mitigate risks.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Ookla
Description
Speedtest.net provides free internet speed testing services via desktop and mobile apps, enabling users worldwide to measure broadband speed and network performance.
Key services
Internet speed testing, Speedtest apps for multiple platforms, Speedtest Global Index and research, Performance directory and awards
Content quality
excellent
Branding
consistent

Technology

Stack
JavaScript, Amazon Advertising SDK, Google Tag Manager, Firebase, AWS AppSync, OpenID Connect, HTML5, CSS3
Platforms
Web, Android, iOS, macOS, Windows, Apple TV
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
90/100
Good practices seen
  • HTTPS enforced
  • Use of security headers
  • No exposed sensitive data in HTML
  • Secure forms with proper labeling

Analytics and tracking

Services
Google Tag Manager, Firebase Analytics, Visitor Analytics (Diffuser)
Tracking level
moderate
Privacy practices
good

Advertising

Ad networks
Amazon Advertising, OpenX, Rubicon, Index Exchange, PubMatic, Sharethrough, Criteo, Yahoo Ads, Medianet, Rise, The Trade Desk
Tracking pixels
Diffuser
Marketing tools
Firebase, AWS AppSync
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 interactive features.
  2. Strong use of modern web technologies and advertising networks.
  3. Comprehensive privacy and cookie policies with consent mechanisms.
  4. No direct contact emails or phone numbers found on the main page.
  5. No explicit security policy or incident response information found.
  6. WHOIS data for the domain is not available in the provided raw output.
  7. No adult or questionable content detected.
  8. Good SEO and accessibility practices observed.
Technical notes

Notes

The website uses a modern and robust technical infrastructure including JavaScript frameworks, AWS AppSync for API interactions, Firebase for backend services, and integrates multiple advertising and analytics platforms. Hosting is provided by Hetzner Online, a reputable provider. The site is optimized for performance and mobile devices, with good accessibility and SEO practices. The use of multiple ad networks and tracking services indicates a complex marketing ecosystem. No CMS was detected, suggesting a custom-built or proprietary platform. The technical implementation supports a scalable and performant user experience with room for further security and compliance enhancements.
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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