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Security report for quantcast.com

Quantcast · Technology · United States

Medium risk. 8 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

61/100

Risk levelMedium

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

Quantcast is a leading technology company specializing in programmatic advertising through its AI-powered Demand Side Platform (DSP). The company connects brands to audiences using real-time data from over 100 million destinations, enabling advertisers, agencies, and publishers to optimize digital advertising campaigns effectively. Positioned as a high-performance platform, Quantcast emphasizes outperforming traditional DSPs with faster and more efficient customer conversions. The website reflects a mature enterprise with a strong brand presence, showcasing major clients and detailed case studies. Technically, the website leverages modern frameworks such as React and Builder.io CMS, integrated with marketing and analytics tools including Marketo Forms, Google Tag Manager, and Quantcast's own tracking pixels. The site is well-optimized for mobile and accessibility, with good SEO practices and performance. Privacy compliance is robust, featuring a consent management platform for GDPR and cookie consent mechanisms. From a security perspective, the site employs HTTPS with strong SSL configuration and security headers, secure form handling, and no visible vulnerabilities in the provided content. However, explicit security policies and incident response contacts are not publicly disclosed, representing an area for improvement. Overall, the domain registration and WHOIS data confirm the legitimacy and consistency of the business identity. The overall risk assessment is low, with recommendations focusing on enhancing transparency around security policies and vulnerability disclosures to further strengthen trust and compliance posture.

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

8 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.

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
47
Security headers
30
Email security
70
DNS health
85
Network security
100
GDPR outside view
35
Average
61

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 operates in the technology and media sectors, providing programmatic advertising solutions primarily targeting advertisers, agencies, and publishers. Its business model revolves around leveraging AI and real-time audience data to deliver superior advertising outcomes. The company demonstrates strong market positioning with a focus on innovation and outperforming competitors. Revenue streams likely include platform usage fees, data services, and managed advertising solutions. The presence of major global brands as clients and detailed case studies indicates a robust partnership ecosystem and growth trajectory. Strategic observations highlight Quantcast's emphasis on cookieless advertising and omnichannel capabilities, aligning with evolving industry trends.

Security posture

Quantcast exhibits a mature security posture with enforced HTTPS, comprehensive security headers, and integration of a consent management platform ensuring GDPR compliance. The website's forms are secured with validation, and no sensitive data exposure is evident. However, the absence of a publicly available security policy, incident response procedures, or vulnerability disclosure program suggests gaps in transparency and readiness communication. While no vulnerabilities were detected in the analyzed content, continuous monitoring and disclosure mechanisms would enhance security culture and stakeholder confidence. The current posture supports business continuity and regulatory compliance but can be improved with explicit security governance documentation.

Recommendations

  1. Publish a dedicated security policy page outlining security practices and commitments.
  2. Implement and publicize a vulnerability disclosure program or security.txt file.
  3. Provide clear contact channels for security incidents and abuse reporting.
  4. Regularly audit and update third-party scripts to mitigate supply chain risks.
  5. Enhance transparency on data retention and privacy policies to strengthen compliance.
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, Quantcast Pixel, InMobi CMP, LeanData JS snippet
Frameworks
React
Platforms
Quantcast DSP Platform
Performance
moderate
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
90/100
Good practices seen
  • HTTPS enforced
  • Consent management platform (CMP) for GDPR compliance
  • Secure forms with validation
  • No exposed sensitive data detected

Analytics and tracking

Services
Google Tag Manager, Quantcast Analytics
Tracking level
extensive
Privacy practices
good

Advertising

Ad networks
Quantcast Pixel, InMobi CMP
Tracking pixels
Quantcast Pixel, G2 Crowd Attribution Tracking
Marketing tools
Marketo Forms, LeanData
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 professional design
  2. Strong brand presence with major client logos and testimonials
  3. Comprehensive marketing and advertising platform focused on programmatic DSP
  4. Good privacy and cookie compliance with CMP integration
  5. No exposed security vulnerabilities detected in the HTML content
  6. No explicit security policy or incident response info publicly available
  7. Use of modern web technologies and frameworks
  8. Multiple external trusted domains for fonts, analytics, and marketing tools
Technical notes

Notes

The website is built on a modern technology stack featuring React and Builder.io CMS, enabling dynamic content management and responsive design. Integration with marketing automation (Marketo), analytics (Google Tag Manager), and tracking pixels (Quantcast Pixel, G2 Crowd) supports comprehensive data-driven marketing strategies. Performance is moderate with good mobile optimization and accessibility features. The use of multiple external trusted domains for fonts, scripts, and tracking indicates a complex but well-managed infrastructure. Opportunities exist to optimize loading speed further and consolidate third-party dependencies to reduce potential attack surfaces and improve maintainability.
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. 65/100Medium32 findingsView report
  2. 65/100Medium32 findingsView report
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