Skip to main content

Security report for mediamath.com

MediaMath · Technology · United States

Medium risk. 5 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

63/100

Risk levelMedium

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

MediaMath is an established enterprise-level digital advertising technology company specializing in omnichannel demand-side platform (DSP) solutions. The company, founded in 2004 and now part of Infillion, offers advanced programmatic advertising services including CTV advertising and flexible identity management. Their platform empowers brands and agencies to efficiently manage and optimize digital marketing campaigns across multiple channels. The website reflects a mature and professional digital presence with comprehensive privacy and cookie policies, strong branding consistency, and active social media engagement. Technically, the site is built on WordPress with modern technologies and integrates Google Tag Manager and HubSpot for analytics and marketing. Security posture is good with TLS 1.3 support, OCSP stapling, and SPF records, though improvements such as enabling HSTS and additional security headers are recommended. The domain registration is consistent and trustworthy, supporting the legitimacy of the business. Overall, MediaMath presents a credible and professional digital footprint with room for technical performance optimization and enhanced security hardening.

Scanned

This is an earlier scan of mediamath.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

5 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 Consent Banner found

      GDPR requires explicit consent for non-essential cookies

      What to do: Implement a cookie consent banner that appears on first visit

  3. SSL/TLS

    TLS encrypts the connection and proves the site is really yours. Weak or expiring certificates trigger browser warnings and put traffic at risk.

    • High

      Weak SSL Key Length

      SSL certificate uses 256-bit key, which is considered weak

      What to do: Use at least 2048-bit RSA or 256-bit ECC key

      • CWE-326
      • OWASP A04:2025
      • Mozilla TLS: Mozilla Server Side TLS 6.0 intermediate: rsa_key_size 2048

Need hands-on remediation? Email guard@offseq.com

Keep watching mediamath.com

This scan found 20 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

€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.

Billed monthly to your card. Cancel anytime. See sample alerts.

Full report

€39.90one-time

  • The complete analysis as a PDF you can cite
  • Email delivery with an unlock code
  • Lifetime access to this report

Prices incl. 21% VAT. Secure checkout by Mollie; sold by SEQ SIA, Latvia.

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
15
Email security
50
DNS health
80
Network security
100
GDPR outside view
58
Average
63

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

MediaMath holds a strong market position as a key player in the ad tech industry, leveraging its mature domain and strategic acquisition by Infillion. The company targets brands and agencies seeking sophisticated digital advertising solutions, focusing on data-driven omnichannel marketing and identity resolution. Their business model centers on providing a scalable DSP platform with integrated CTV and identity graph capabilities. Partnerships with IBM Watson Advertising and others enhance their competitive advantage. The company’s revenue streams likely include platform subscriptions, managed services, and data activation fees. The website content and linked domains indicate a well-established partnership ecosystem and a focus on transparency and privacy compliance, which are critical in the advertising technology sector.

Security posture

MediaMath demonstrates a solid security posture with HTTPS enforced using modern TLS protocols (TLS 1.3 and 1.2), successful OCSP stapling, and SPF records to protect email integrity. However, the absence of HTTP Strict Transport Security (HSTS) and other security headers such as Content-Security-Policy and X-Frame-Options represents an area for improvement. No known vulnerabilities or exposed sensitive data were detected. The website lacks explicit security policy documentation and incident response contact information, which could enhance trust and preparedness. The DNS configuration does not include DNSSEC, which could further strengthen DNS security. Overall, the security measures are adequate but could be enhanced to align with best practices for enterprise digital platforms.

Recommendations

  1. Enable HTTP Strict Transport Security (HSTS) with includeSubDomains and preload to enforce HTTPS and protect against downgrade attacks.
  2. Implement additional security headers such as Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options to mitigate common web vulnerabilities.
  3. Publish a security.txt file to provide clear vulnerability disclosure and incident response contact information.
  4. Consider enabling DNSSEC to improve DNS integrity and prevent spoofing.
  5. Optimize website performance by reducing resource count and load time to improve user experience and SEO.
Technical notes

Notes

The website is built on WordPress CMS using WPBakery Page Builder and Smart Slider 3 for content management and interactive elements. It leverages Google Tag Manager and HubSpot for analytics and marketing automation. Hosting is provided via Amazon AWS infrastructure, as indicated by AWS DNS servers. The site supports modern TLS protocols and uses OCSP stapling for certificate validation. Performance is suboptimal with a high load time (~20 seconds) and a large number of resources (223), indicating potential technical debt or heavy frontend assets. Mobile optimization is good, with responsive design and font loading from Google Fonts. SEO is well addressed with proper meta tags, Open Graph, and JSON-LD structured data. Accessibility is basic, with room for improvement in ARIA roles and semantic HTML. Overall, the technical infrastructure is modern but could benefit from performance tuning and enhanced security 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. 68/100Medium34 findingsView report
Reviews of this site

Share your experience with mediamath.com. Every review is verified by email and published after moderation.

Overall rating
Select a rating
4000 characters remaining

We’ll email you to confirm your review and keep your details private.

Community rating

No published reviews yet. Be the first to review mediamath.com.

Feedback on this report

Rate this report, add an optional comment, and tell us if you want a security specialist to follow up.

Overall report quality
Select a rating
2000 characters remaining

We only use your feedback to improve Guard reports. Contact details are never shared.