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Security report for adtran.com

Adtran · Telecommunications · United States

Low risk. 2 critical or high findings in GDPR outside view and SSL/TLS.

Security score

84/100

Risk levelLow

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

Adtran is a globally recognized technology company specializing in open and disaggregated networking and communications solutions. Their offerings span fiber access, optical networking, cloud software, and enterprise networking products, targeting telecommunications providers, enterprises, and network operators. The website reflects a mature digital presence with comprehensive product information, multimedia content, and investor relations, indicating a well-established market position. Technically, the site employs modern JavaScript libraries, analytics tools, and consent management, hosted on a Sitecore CMS platform, delivering a good user experience with mobile optimization and accessibility features. Security posture is solid with HTTPS and privacy compliance, though improvements in security headers and incident response transparency are recommended. The absence of WHOIS data limits domain registration trust analysis but does not detract from the overall legitimacy and professionalism of the site.

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

2 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.

    • 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

  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 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 adtran.com

This scan found 13 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

€25per month

  • 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
75
Security headers
85
Email security
80
DNS health
90
Network security
100
GDPR outside view
73
Average
84

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

Adtran operates in the telecommunications sector as a large enterprise with a focus on innovative networking technologies including fiber optics, 5G, and cloud-managed solutions. Their business model centers on providing hardware and software solutions to service providers and enterprises, supported by training and consulting services. The company maintains a strong partnership and investor ecosystem, with clear branding and consistent messaging. Growth indicators include active innovation pages and broadband funding initiatives. The website's extensive content and multimedia resources support customer engagement and thought leadership.

Security posture

The website demonstrates a mature security posture with enforced HTTPS, cookie consent mechanisms, and a dedicated cybersecurity framework page. No exposed sensitive data or vulnerable libraries were detected in the HTML content. However, the lack of explicit security headers such as Content Security Policy and HSTS is a gap. Incident response and vulnerability disclosure information are not publicly available, which could hinder rapid response to security issues. Overall, the site aligns well with privacy regulations and best practices but could enhance transparency and technical defenses.

Recommendations

  1. Implement and publish standard security headers including CSP, HSTS, and X-Frame-Options to strengthen browser security.
  2. Provide clear incident response contact information and a vulnerability disclosure policy or security.txt file to improve security transparency.
  3. Regularly audit and update third-party libraries and scripts to mitigate potential vulnerabilities.
  4. Enhance contact information visibility to improve user trust and support accessibility.
  5. Consider publishing detailed security certifications and compliance frameworks to reinforce trust with enterprise customers.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Adtran
Description
Adtran is a leading global provider of open, disaggregated networking and communications solutions that enable voice, data, video and internet communications across any network infrastructure.
Key services
Open optical networking, Network infrastructure assurance, Fiber access and aggregation, Residential solutions, Business solutions, Cloud software, Services including training and support
Content quality
excellent
Branding
consistent

Technology

Stack
jQuery 3.5.0, Google Tag Manager, Matomo Analytics, Plausible Analytics, CookieLaw.org consent scripts, Vimeo video player, SVG icons, PDF.js
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Cookie consent mechanism
  • No exposed sensitive data in HTML
  • Secure forms with required fields

Analytics and tracking

Services
Matomo, Google Tag Manager, Plausible
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Matomo, Plausible
Marketing tools
Matomo, Plausible
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 multimedia.
  2. Strong branding and consistent navigation structure.
  3. Comprehensive product and service offerings detailed.
  4. Multiple social media and investor relations links present.
  5. Cookie consent and privacy policy implemented indicating GDPR awareness.
  6. No direct contact emails or phone numbers found on homepage; contact likely via dedicated pages.
  7. No visible security headers in HTML source; potential area for improvement.
  8. WHOIS data unavailable, limiting domain registration trust analysis.
Technical notes

Notes

The website is built on a modern technology stack including jQuery, Sitecore CMS, and integrates multiple analytics platforms such as Matomo and Plausible. It uses Vimeo for video content delivery and employs cookie consent scripts for GDPR compliance. The site is well-structured with semantic HTML and accessibility features. Performance is moderate with room for optimization, particularly in script loading and image delivery. The absence of some security headers and WHOIS data are notable technical gaps. Overall, the infrastructure supports a professional and scalable online presence suitable for a large telecommunications enterprise.
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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