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Security report for indexexchange.com

Index Exchange · Technology · N/a

Medium risk. 7 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

Index Exchange operates as a global supply-side platform specializing in advertising technology solutions that enable premium digital media companies to monetize their ad inventory effectively. The company positions itself as a leader in accelerating the evolution of ad technology, targeting advertisers and publishers seeking to optimize advertising revenue across multiple screens. The website reflects a mature digital presence with comprehensive content, strong branding, and a clear focus on its core business offerings. Technically, the website is built on WordPress with advanced SEO optimizations via Yoast SEO Premium, integration of Google Tag Manager for analytics, and usage of modern web assets such as FontAwesome and Vimeo player APIs. The site demonstrates good performance and mobile optimization, though accessibility features could be enhanced. Hosting appears to leverage a CDN for content delivery, contributing to moderate to fast load times. From a security perspective, the site enforces HTTPS with excellent SSL configuration and implements key security headers to protect against common web vulnerabilities. No exposed sensitive data or vulnerable libraries were detected. However, the absence of explicit security policies, incident response contacts, and vulnerability disclosure mechanisms suggests room for improvement in security transparency and readiness. Overall, the website presents a professional and trustworthy front for a technology-driven advertising business. The lack of WHOIS data limits full domain trust verification, but the digital footprint and content quality support a positive risk assessment. Strategic recommendations include publishing security and incident response information, enhancing accessibility, and maintaining vigilant third-party script audits to sustain security posture.

Scanned

This is an earlier scan of indexexchange.com. View the latest report

NIS2 and GDPR posture

GDPR outside view
58/ 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

7 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 indexexchange.com

This scan found 23 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
15
Email security
85
DNS health
85
Network security
100
GDPR outside view
58
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

Index Exchange holds a significant position in the digital advertising technology sector, operating a global supply-side platform that connects premium digital media companies with advertisers. Its business model focuses on real-time bidding and programmatic advertising, enabling publishers to maximize revenue from their ad impressions. The company targets large-scale digital media enterprises and advertisers seeking advanced ad technology solutions. The website's content and structured data indicate a large enterprise with a global reach, supported by active social media channels and comprehensive marketing tools. While direct financial or founding data is not disclosed, the company's market presence and technology stack suggest a mature and competitive player in the ad tech industry. Partnerships and integrations with major platforms and ad networks further reinforce its ecosystem position.

Security posture

The website demonstrates a solid security foundation with enforced HTTPS, strong SSL/TLS configuration, and implementation of multiple security headers such as Content-Security-Policy and Strict-Transport-Security. There is no evidence of exposed sensitive information or use of outdated or vulnerable libraries. However, the absence of a published security policy, incident response contact details, and vulnerability disclosure program indicates gaps in security governance and transparency. These omissions could impact stakeholder confidence and incident handling effectiveness. The site uses Google Tag Manager and third-party scripts, which require ongoing monitoring to mitigate supply chain risks. Overall, the security posture is good but would benefit from enhanced policy disclosures and formalized incident response mechanisms.

Recommendations

  1. Publish a dedicated security policy page outlining security practices and compliance frameworks.
  2. Implement and publicize an incident response contact channel, such as security@ or abuse@ email addresses.
  3. Create and maintain a vulnerability disclosure program, including a security.txt file.
  4. Enhance website accessibility features to improve compliance with standards such as WCAG.
  5. Regularly audit and update third-party scripts and dependencies to prevent supply chain vulnerabilities.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Index Exchange
Description
Grow advertising revenue and reach consumers on any screen through Index Exchange's global supply-side platform and ad technology solutions.
Key services
Supply-side platform, Ad technology solutions, Advertising revenue growth
Content quality
excellent
Branding
consistent

Technology

Stack
WordPress, Yoast SEO Premium, Google Tag Manager, Vimeo Player API, FontAwesome
Performance
moderate
Mobile
good
Accessibility
basic
SEO
excellent

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Use of security headers
  • No exposed sensitive data in HTML
  • No visible vulnerable libraries

Analytics and tracking

Services
Google Tag Manager
Tracking level
moderate
Privacy practices
good

Advertising

Ad networks
Index Exchange
Marketing tools
Yoast SEO Premium
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 no blocking or WAF challenge
  2. Professional and comprehensive content focused on advertising technology
  3. Strong SEO and structured data implementation
  4. No direct company contact emails or phone numbers found in HTML; contact likely via forms or social media
  5. WHOIS data unavailable, limiting domain trust verification
  6. Use of modern web technologies and security best practices
Technical notes

Notes

The website is built on a WordPress CMS platform, leveraging Yoast SEO Premium for search engine optimization and Google Tag Manager for analytics and tracking. It uses modern web technologies including FontAwesome for icons and Vimeo API for video content. The hosting environment appears to utilize a CDN (pcdn.co) for content delivery, enhancing performance and availability. The site is mobile responsive with good design quality and navigation clarity. Accessibility is basic and could be improved. SEO implementation is excellent with comprehensive meta tags, Open Graph data, and JSON-LD structured data. Performance is moderate, likely influenced by third-party scripts and media content. No critical technical debt or outdated technologies were detected, indicating a well-maintained 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

Earlier scans of this domain

  1. 68/100 +10Medium31 findingsView report
  2. 58/100Medium28 findingsView report
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