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Security report for quantcast.com

Quantcast · Technology · United States

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 programmatic advertising platform designed to connect brands with their target audiences across multiple digital channels. The platform leverages real-time data from over 100 million destinations to optimize advertising outcomes, positioning Quantcast as a significant player in the digital advertising technology market. The website reflects a mature enterprise-level business with a strong focus on data-driven marketing solutions and omnichannel DSP capabilities. Technically, the site employs modern frameworks such as React and Builder.io CMS, integrating advanced marketing and analytics tools including Marketo, Google Tag Manager, and LinkedIn Insight Tag. The site is well-optimized for mobile and accessibility, with a professional design and clear navigation. Security posture is strong with HTTPS enforcement, security headers, and GDPR-compliant consent mechanisms, although explicit incident response and vulnerability disclosure information are absent. Overall, the site demonstrates high professionalism and trustworthiness, supported by client testimonials and case studies from reputable brands. However, the absence of WHOIS data limits domain registration verification, which slightly impacts the trust analysis. Strategic recommendations include enhancing transparency around incident response and vulnerability disclosures, and maintaining up-to-date third-party scripts to mitigate risks.

Scanned

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.

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
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's market positioning is that of an enterprise-level technology provider specializing in programmatic advertising and audience targeting. Their competitive advantage lies in AI-driven data analytics and omnichannel DSP capabilities, enabling clients to achieve superior advertising performance. The business model centers on providing a platform-as-a-service for advertisers, agencies, and publishers, generating revenue through advertising spend managed via their DSP. The target customer segments include direct-to-consumer brands, finance, travel, technology, and food & beverage sectors, as evidenced by showcased case studies. Growth indicators include extensive client logos and positive testimonials. The partnership ecosystem includes integrations with major marketing and analytics platforms. Operationally, Quantcast maintains a strong digital presence with comprehensive content and marketing tools, supporting sustained market relevance.

Security posture

Quantcast exhibits a mature security posture with enforced HTTPS, robust security headers, and a consent management platform ensuring GDPR compliance. The website's forms are secured with validation, and no exposed sensitive data or vulnerable libraries were detected. However, the absence of publicly available incident response contacts or a vulnerability disclosure policy represents a compliance gap. Data protection practices appear sound, but explicit data retention policies are not disclosed. The security culture is implied to be strong given the enterprise nature and client base, but transparency could be improved. Overall, the security maturity is high with room for enhancements in incident response readiness and vulnerability management transparency.

Recommendations

  1. Publish explicit incident response contact information and procedures on the website.
  2. Implement and publicize a vulnerability disclosure policy or security.txt file to encourage responsible reporting.
  3. Regularly audit and update third-party scripts and libraries to mitigate potential vulnerabilities.
  4. Enhance transparency on data retention policies and user data handling practices.
  5. Maintain continuous monitoring and compliance checks aligned with GDPR and emerging regulations like NIS2.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Quantcast
Description
Quantcast provides a high performance advertising platform that connects brands to their audiences using real-time data from over 100 million destinations. The platform is powered by AI and offers omnichannel Demand Side Platform (DSP) capabilities to optimize digital advertising outcomes.
Key services
Demand Side Platform (DSP), Audience targeting, Programmatic advertising, Omnichannel advertising, Cookieless advertising solutions
Content quality
excellent
Branding
consistent

Technology

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

Security

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

Analytics and tracking

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

Advertising

Ad networks
Quantcast Pixel, InMobi CMP
Tracking pixels
Quantcast Pixel, LinkedIn Insight Tag, G2 Crowd tracking
Marketing tools
Marketo Forms, Builder.io
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 focus on AI-driven programmatic advertising platform.
  3. Multiple client logos and case studies enhance trust.
  4. Comprehensive privacy and cookie policies with consent management.
  5. Use of modern web technologies and marketing tools.
  6. No direct contact emails or phone numbers explicitly shown; contact via forms.
  7. WHOIS data unavailable, limiting domain registration verification.
Technical notes

Notes

The website is built on a modern technology stack including React and Builder.io CMS, integrating marketing automation tools such as Marketo and analytics platforms like Google Tag Manager and LinkedIn Insight Tag. Performance is moderate with good mobile optimization and accessibility features. The site uses multiple external domains for fonts, tracking, and content delivery, which are standard for enterprise marketing sites. Technical debt appears minimal, but continuous updates to third-party scripts are necessary to avoid security risks. The infrastructure supports a professional and scalable digital presence suitable for enterprise operations.
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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