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Security report for quantcast.com

Quantcast · Technology · N/a

Medium risk. 7 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

65/100

Risk levelMedium

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

Quantcast operates a sophisticated AI-powered Demand Side Platform (DSP) that enables brands, agencies, and publishers to optimize digital advertising campaigns using real-time audience data from over 100 million destinations. The company positions itself as a high-performance advertising platform that leverages advanced data analytics and machine learning to deliver superior campaign outcomes. The website showcases strong branding, client testimonials, and case studies that reinforce its market leadership and enterprise-scale operations. Technically, the website is built using modern web technologies including React and Builder.io CMS, integrating multiple marketing and analytics tools such as Marketo forms, Google Tag Manager, LinkedIn Insight Tag, and Quantcast's own tracking pixels. The site is mobile-optimized, accessible, and SEO-friendly, providing a professional user experience. However, some security headers are not explicitly detected, and no public security policy or incident response contacts are found, which could be improved. From a security perspective, the site enforces HTTPS and uses consent management platforms to comply with privacy regulations like GDPR. No critical vulnerabilities or exposed sensitive data were identified in the HTML content. The absence of WHOIS data limits domain registration trust analysis, but the website's professional presentation and market presence strongly indicate legitimacy. Overall, Quantcast's website reflects a mature digital advertising technology company with a strong market position and advanced technical infrastructure. Strategic recommendations include enhancing security header implementation, publishing explicit security and incident response policies, and improving WHOIS transparency to bolster trust further.

Scanned

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

NIS2 and GDPR posture

GDPR outside view
35/ 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

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"

  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 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 quantcast.com

This scan found 24 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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  • 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
72
Security headers
30
Email security
70
DNS health
85
Network security
100
GDPR outside view
35
Average
65

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

Quantcast is positioned as a leading programmatic advertising platform specializing in AI-driven DSP solutions. Its business model focuses on providing brands and agencies with data-driven audience targeting and campaign optimization capabilities. The company targets enterprise clients across diverse sectors including travel, finance, technology, and food & beverage, as evidenced by showcased case studies and client logos. Quantcast's competitive advantage lies in its real-time data processing and cookieless advertising solutions, addressing evolving privacy landscapes. The platform's integration with major marketing tools and extensive client testimonials indicate a robust partnership ecosystem and strong customer satisfaction. Quantcast's growth indicators include measurable campaign performance improvements and adoption by globally recognized brands.

Security posture

Quantcast demonstrates a solid security posture with HTTPS enforcement and integration of a consent management platform to address privacy compliance. The use of secure Marketo forms and absence of exposed sensitive data in the website content are positive indicators. However, the lack of visible HTTP security headers such as Content Security Policy (CSP), HSTS, and X-Frame-Options suggests room for improvement in hardening the web application against common attacks. No public security policy or incident response contact information was found, which is a gap in transparency and readiness communication. The website does not publish a security.txt file or vulnerability disclosure program, limiting external security engagement. Overall, the security maturity is good but could be enhanced by adopting additional best practices and public disclosures.

Recommendations

  1. Implement comprehensive HTTP security headers including CSP, HSTS, and X-Frame-Options to strengthen web security.
  2. Publish a dedicated security policy and incident response contact information to improve transparency and readiness.
  3. Establish and publicize a vulnerability disclosure program with a security.txt file to encourage responsible reporting.
  4. Regularly audit and update third-party scripts and marketing tools to mitigate potential vulnerabilities.
  5. Enhance WHOIS data transparency or provide domain registration details to improve trustworthiness.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Quantcast
Description
The Quantcast Platform simplifies digital advertising by connecting brands to their audiences using real-time data from over 100M destinations.
Key services
Demand Side Platform (DSP), Audience intelligence, Programmatic advertising, Cookieless advertising solutions, Creative solutions, Omnichannel advertising
Content quality
excellent
Branding
consistent

Technology

Stack
React, Builder.io, Marketo Forms, Google Tag Manager, LinkedIn Insight Tag, InMobi CMP, Quantcast Pixel, G2 Crowd Attribution Tracking
Frameworks
React
Platforms
Builder.io CMS
Performance
moderate
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Use of consent management platform (CMP)
  • Secure forms with Marketo
  • No exposed sensitive data in HTML

Analytics and tracking

Services
Google Tag Manager, LinkedIn Insight Tag, G2 Crowd Attribution
Tracking level
extensive
Privacy practices
good

Advertising

Ad networks
Quantcast, Google Ads, LinkedIn Ads
Tracking pixels
Quantcast Pixel, LinkedIn Insight Tag, G2 Crowd Attribution
Marketing tools
Marketo Forms, Builder.io CMS
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 elements.
  2. Strong branding and client trust signals present.
  3. Comprehensive marketing and advertising platform information.
  4. Use of multiple third-party marketing and analytics tools.
  5. No direct contact emails or phone numbers publicly listed; contact via forms.
  6. No explicit security policy or incident response info found.
  7. WHOIS data unavailable, limiting domain registration trust analysis.
Technical notes

Notes

The website leverages a modern technology stack centered on React and Builder.io CMS, enabling dynamic content management and responsive design. Integration with marketing automation (Marketo), analytics (Google Tag Manager, LinkedIn Insight), and tracking pixels (Quantcast Pixel, G2 Crowd) supports advanced campaign measurement and user tracking. The site is well-structured with appropriate meta tags and SEO optimizations, contributing to good search engine visibility. Performance is moderate, with asynchronous loading of scripts and preconnect hints to optimize resource fetching. Accessibility features and mobile responsiveness are well implemented, ensuring a broad user reach. Technical risks include reliance on multiple third-party scripts which require ongoing security monitoring and potential improvements in security header configurations.
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. 65/100 +4Medium32 findingsView report
  2. 61/100Medium31 findingsView report
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