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Security report for adsrvr.org

The Trade Desk, Inc. · Technology · United States

Medium risk. 6 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

66/100

Risk levelMedium

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

The Trade Desk operates a mature and established advertising platform focused on providing users with control over their personal information and targeted advertising preferences. The website content centers on privacy opt-out mechanisms and industry compliance, targeting users and advertisers concerned with data privacy. The company is well-positioned in the technology sector with a large size and a domain age consistent with its business history. Technically, the website uses standard web technologies such as jQuery and New Relic for monitoring but lacks modern security implementations such as valid SSL certificates and security headers, which significantly impacts its security posture. The presence of a subdomain takeover vulnerability further exposes the platform to potential risks. Privacy compliance is well addressed through clear links to comprehensive privacy policies, though cookie consent mechanisms are not implemented on this page. Overall, the website is functional and professional but requires urgent security improvements to protect user data and maintain trust.

Scanned

This is an earlier scan of adsrvr.org. View the latest report

NIS2 and GDPR posture

GDPR outside view
43/ 100 · High
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 Cookie Policy found

      GDPR requires clear information about cookie usage

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

    • 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 adsrvr.org

This scan found 21 issues across 5 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

Email alerts on material changes and an exportable JSON history of every change.

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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
100
Security headers
15
Email security
70
DNS health
65
Network security
100
GDPR outside view
43
Average
66

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

The Trade Desk holds a strong market position as a technology company specializing in advertising technology and data privacy controls. Its business model revolves around providing targeted advertising services while offering users opt-out options to comply with evolving privacy regulations. The company targets privacy-conscious users and industry participants, leveraging partnerships and industry self-regulatory programs. The website content and domain registration details reflect a consistent and legitimate business presence. However, the lack of visible contact information and security certifications on the site suggests areas for improvement in transparency and trust-building. The company benefits from a strong brand and domain protection but should enhance its digital presence with better security and contact accessibility.

Security posture

The current security posture of the website is weak due to the absence of a valid SSL certificate and HTTPS support, exposing users to potential data interception risks. No security headers such as HSTS or Content-Security-Policy are implemented, reducing protection against common web attacks. The detection of a subdomain takeover vulnerability on api.adsrvr.org represents a critical security gap that could be exploited to impersonate services or intercept data. While no malware or phishing indicators were found, the lack of incident response contacts and security policies on the site limits the organization's readiness to handle security incidents. Compliance with GDPR is indicated through privacy policy references, but technical security controls need urgent enhancement to align with best practices.

Recommendations

  1. Install and maintain a valid SSL/TLS certificate to enable HTTPS across all domains and subdomains.
  2. Enable modern TLS protocols (TLS 1.2 or 1.3) and disable all insecure protocols to protect data in transit.
  3. Implement essential security headers such as HSTS, Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options.
  4. Address and remediate the subdomain takeover vulnerability by securing or removing unused DNS entries.
  5. Add clear contact information and incident response channels on the website to improve transparency and security readiness.
Technical notes

Notes

The website employs a basic technology stack including jQuery 3.7.1 and New Relic for performance monitoring. Hosting appears to be on AWS infrastructure, inferred from ELB subdomain references. Performance is moderate with a page load time of approximately 4.4 seconds and a page size of about 201 KB. The site lacks modern security configurations such as HTTPS and security headers, which are critical for protecting user data. Mobile optimization and accessibility are basic but functional. SEO optimization is minimal with no advanced metadata or structured data detected. The site does not use a CMS or advanced frameworks, indicating a relatively simple technical implementation that could benefit from modernization and security hardening.
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

Earlier scans of this domain

  1. 70/100Medium29 findingsView report
  2. 70/100Medium29 findingsView report
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