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Security report for appnexus.com

Microsoft · Technology · United States

Low risk. No critical or high findings.

Security score

89/100

Risk levelLow

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

Microsoft Advertising, a division of Microsoft Corporation, offers a comprehensive digital marketing platform targeting advertisers and publishers globally. The platform leverages Microsoft's extensive network including Bing, Edge, and partnerships with Netflix, Yahoo, and others to provide search, display, video, retail, and gaming advertising solutions. The site highlights advanced AI-powered tools such as Copilot to enhance campaign creation and management. The business model focuses on enabling advertisers to reach highly engaged audiences across multiple digital channels, supported by Microsoft's trusted brand and technology infrastructure. Technically, the website is built on Adobe Experience Manager and hosted on Microsoft Azure, utilizing modern JavaScript libraries and telemetry tools like oneDS Application Insights and Azure Monitor. The site is well-optimized for performance, mobile responsiveness, and accessibility, with strong SEO practices. Security is robust with HTTPS, multiple security headers, and consent management mechanisms in place, although explicit incident response and vulnerability disclosure policies are not publicly detailed. Overall, the security posture is strong with no detected vulnerabilities or suspicious elements. Privacy compliance is well addressed with comprehensive policies and cookie consent mechanisms. The website demonstrates high professionalism, trustworthiness, and alignment with Microsoft's corporate standards. No adult or questionable content is present, making it safe for general audiences. Strategically, Microsoft Advertising should continue enhancing transparency around security policies and incident response, and consider publishing vulnerability disclosure information to further build trust. Maintaining up-to-date third-party scripts and expanding accessibility features will also support long-term digital maturity and compliance.

Scanned

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

NIS2 and GDPR posture

GDPR outside view
83/ 100 · Low
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

No critical or high findings. These medium findings are worth fixing next.

  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.

    • Medium

      Missing X-XSS-Protection header

      Legacy XSS protection (deprecated but still recommended)

      What to do: Add "X-XSS-Protection: 1; mode=block"

    • Medium

      Missing Permissions-Policy header

      Controls browser features and APIs

      What to do: Implement a Permissions-Policy to restrict feature access

      • OWASP Secure Headers: OWASP Secure Headers Project recommends Permissions-Policy: accelerometer=(), autoplay=(), camera=(), cross-origin-isolated=(),…

  2. GDPR outside view

    These are the privacy signals visitors and data protection authorities look for under GDPR.

    • Medium

      Privacy policy may not be GDPR compliant

      Privacy policy lacks explicit GDPR compliance elements

      What to do: Update privacy policy to explicitly address GDPR requirements and user rights

  3. DNS health

    DNS sends visitors and email to the right servers. Misconfigured records can cause outages or let someone redirect your traffic.

    • Medium

      DNSSEC Not Enabled

      DNSSEC is not configured for this domain

      What to do: Enable DNSSEC to prevent DNS spoofing attacks

      • CAPEC-142
      • RFC 4033
      • RFC 4035

Keep watching appnexus.com

This scan found 11 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.

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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
100
Security headers
70
Email security
93
DNS health
90
Network security
100
GDPR outside view
83
Average
89

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

Breach exposure

Leaked credentials and lookalike domains from OffSeq Breach. The counts are free; the detailed lists are paid add-ons.

Dark web exposure

Add-on

Leaked records that mention appnexus.com, from OffSeq Breach.

Total records
1,929
Employees
8
Customers
1,729
Third parties
192
Weak passwords
10%

Latest record dated 2026-05-12 · 43 subdomains affected

See the 10 newest leaked credentials

A one-off add-on to this report that lists the most recent identifier and password pairs OffSeq Breach holds for appnexus.com.

Select it in the checkout above.

Masked preview

  • –secure-console.appnexus.com2026-05-12
  • –staging.console.appnexus.com2025-11-14
  • –console.appnexus.com2025-11-12
  • –onsole.appnexus.com2025-09-20
  • –staging.console.appnexus.com2025-09-19

Breach keeps ingesting new leaks, so these numbers can grow between scans.

Open in Breach(opens in a new tab)Monitor on Breach(opens in a new tab)

Technical appendix

Business context, site observations and technical notes gathered during the scan, and the standards behind each reference.

Business context

Business profile

Microsoft Advertising holds a leading position in the digital advertising market, leveraging Microsoft's global brand and technology ecosystem. Its competitive advantage lies in integrating AI-driven tools, exclusive partnerships, and a broad advertising network spanning search, display, video, retail, and gaming. Revenue streams likely include pay-per-click, programmatic advertising, and premium inventory sales. The target customer segments are advertisers and publishers seeking scalable, data-driven marketing solutions. Growth indicators include continuous AI integration and expansion of advertising formats. The partnership ecosystem includes major platforms like Netflix and Yahoo, enhancing reach and inventory quality. Operationally, the business benefits from Microsoft's enterprise-grade infrastructure and global presence.

Security posture

The website exhibits a mature security posture with enforced HTTPS, comprehensive security headers, and consent management aligned with GDPR. No exposed sensitive data or vulnerable libraries were detected. However, the absence of publicly available incident response policies and vulnerability disclosure mechanisms suggests areas for improvement. The use of official Microsoft analytics and monitoring tools indicates strong telemetry and security monitoring capabilities. Overall, the site is secure for users and business operations, but enhancing transparency and formalizing security policies would strengthen trust and compliance.

Recommendations

  1. Publish a dedicated security policy and incident response page to improve transparency.
  2. Implement and publicize a vulnerability disclosure program and security.txt file.
  3. Regularly audit and update third-party scripts to mitigate supply chain risks.
  4. Enhance accessibility features to meet higher standards (e.g., WCAG AAA).
  5. Maintain and update privacy and consent mechanisms in line with evolving regulations.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Microsoft
Description
Microsoft Advertising is building a new world of advertising possibilities to empower growth for all.
Key services
Search advertising, Display advertising, Video and Connected TV advertising, Retail advertising, Performance Max campaigns, Advertising technology and services, Gaming advertising solutions, AI-powered Copilot marketing assistant
Content quality
excellent
Branding
consistent

Technology

Stack
Adobe Helix RUM, oneDS Application Insights, Azure Monitor scripts, JavaScript libraries from Microsoft domains, Dynamic Media delivery, AEM (Adobe Experience Manager) CMS
Frameworks
Adobe Experience Manager
Platforms
Microsoft Azure
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
90/100
Good practices seen
  • HTTPS enforced
  • Consent management for cookies
  • No exposed sensitive data in HTML
  • Use of official Microsoft analytics and monitoring scripts

Analytics and tracking

Services
oneDS Application Insights, Azure Monitor, Microsoft Clarity, TikTok Analytics, Bing Ads Analytics
Tracking level
moderate
Privacy practices
good

Advertising

Ad networks
Microsoft Advertising Network
Tracking pixels
Microsoft Clarity, TikTok Analytics, Bing Ads
Marketing tools
Copilot AI assistant, Microsoft Advertising Editor, Keyword Planner, Ad Preview
Transparency
good

Site quality

Design
excellent
User experience
excellent
Content relevance
excellent
Navigation
excellent
Professionalism
excellent
Trustworthiness
high

Key observations

  1. Website is a subdomain of microsoft.com, indicating official Microsoft property.
  2. Content is rich, professional, and targeted at advertisers and publishers.
  3. Strong use of Microsoft and partner domains for resources and analytics.
  4. Comprehensive privacy, cookie, and terms policies are present.
  5. No direct contact emails or phone numbers found; contact via forms.
  6. No security.txt or explicit vulnerability disclosure found.
  7. No signs of adult or questionable content.
  8. Modern technology stack with Adobe Experience Manager and Azure hosting.
  9. Good security posture with HTTPS and security headers.
  10. No WAF or blocking detected; content fully accessible.
Technical notes

Notes

The website is built on a modern technology stack including Adobe Experience Manager CMS and hosted on Microsoft Azure, ensuring scalability and reliability. It uses advanced telemetry and analytics tools such as oneDS Application Insights and Azure Monitor for performance and user behavior tracking. The site is optimized for fast loading, mobile responsiveness, and SEO best practices. The use of dynamic media delivery and extensive preconnect/dns-prefetch hints indicates performance optimization. No technical debt or legacy technologies were detected, positioning the site well for future enhancements and integrations.
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. 89/100Low20 findingsView report
  2. 75/100Medium8 findings · partial scanView report
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