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Security report for appnexus.com

Microsoft · Technology · N/a

Low risk. No critical or high findings.

Security score

89/100

Risk levelLow

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

Microsoft Advertising is a division of Microsoft Corporation offering a comprehensive digital marketing platform that enables advertisers and publishers to reach billions of users across search, display, video, retail, and gaming environments. Leveraging Microsoft's extensive network and partnerships with platforms like Netflix, Ecosia, DuckDuckGo, and Yahoo, the service empowers businesses to optimize campaigns using AI-driven tools such as Copilot and Performance Max. The website demonstrates a high level of professionalism, technical sophistication, and compliance with privacy regulations, reflecting Microsoft's market leadership in technology and advertising solutions. The technical infrastructure is robust, utilizing Adobe Experience Manager as the CMS, hosted on Microsoft Azure, and employing modern analytics and monitoring tools including oneDS Application Insights and Microsoft Clarity. The site is well-optimized for performance, mobile responsiveness, and accessibility, with strong SEO practices and comprehensive metadata. Security measures include HTTPS enforcement, security headers, and cookie consent mechanisms, contributing to a strong security posture. While WHOIS data for the subdomain is unavailable, this is consistent with large enterprises managing internal subdomains. The overall risk is low, with no detected vulnerabilities or suspicious content. Strategic recommendations include enhancing incident response visibility and publishing a vulnerability disclosure policy to further strengthen trust and security culture.

Scanned

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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Full report

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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 operates within the technology sector as an essential business entity under Microsoft Corporation. It targets advertisers and publishers seeking advanced digital marketing solutions. The platform's competitive advantage lies in its integration with Microsoft's ecosystem, AI-powered tools, and exclusive partnerships, enabling broad audience reach and campaign optimization. Revenue streams likely include advertising spend, partner programs, and technology services. Growth indicators include continuous innovation in AI integration and expansion into emerging advertising formats such as Connected TV and gaming. The partnership ecosystem is strong, with dedicated portals and resources for partners and agencies, supporting a scalable and collaborative business model.

Security posture

The website exhibits a mature security posture with HTTPS enforced, comprehensive security headers, and privacy compliance mechanisms including cookie consent and GDPR adherence. No exposed sensitive data or vulnerable libraries were detected in the analyzed content. However, the absence of publicly visible incident response contacts or a vulnerability disclosure policy suggests areas for improvement in transparency and readiness. Data protection practices appear robust, supported by Microsoft's global compliance standards. Overall, the security culture is strong but could benefit from enhanced communication channels for security incidents and disclosures.

Recommendations

  1. Publish a clear vulnerability disclosure policy and security.txt file to improve transparency and encourage responsible reporting.
  2. Enhance visibility of incident response contacts such as security@ or abuse@ email addresses on the website.
  3. Continue regular security audits and monitoring of third-party scripts to mitigate supply chain risks.
  4. Improve accessibility features to meet or exceed WCAG 2.1 AA standards for broader inclusivity.
  5. Maintain and update privacy and cookie policies to reflect evolving regulations and user expectations.
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
Content quality
excellent
Branding
consistent

Technology

Stack
Adobe Helix RUM, oneDS Application Insights, Microsoft Azure monitoring scripts, JavaScript ES6+, CSS3, HTML5
Frameworks
Adobe Experience Manager (AEM)
Platforms
Microsoft Azure
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
90/100
Good practices seen
  • HTTPS enforced
  • Content Security Policy implemented
  • Cookie consent mechanism
  • No exposed sensitive data in HTML
  • Use of modern analytics with consent checks

Analytics and tracking

Services
oneDS Application Insights, 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, Clicktale, LivePerson
Marketing tools
Microsoft Advertising Editor, Copilot AI, Keyword Planner
Transparency
excellent

Site quality

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

Key observations

  1. Website is fully accessible with no blocking or WAF challenges.
  2. Content is comprehensive and professionally presented.
  3. Strong Microsoft branding and consistent design.
  4. Multiple language support via hreflang tags.
  5. Robust cookie consent and privacy policy mechanisms.
  6. Use of modern analytics and tracking with consent checks.
  7. No suspicious or malicious content detected.
  8. No direct contact emails or phone numbers publicly listed; contact via forms.
  9. WHOIS data for subdomain not available, typical for large enterprise subdomains.
Technical notes

Notes

The website is built on Adobe Experience Manager, hosted on Microsoft Azure, and uses modern JavaScript frameworks and analytics tools. Performance is optimized with preconnect and dns-prefetch hints, lazy loading of images, and deferred script loading. The site supports multiple languages with hreflang tags and is mobile responsive. Technical debt appears minimal with clean markup and structured data usage. Opportunities exist to further enhance accessibility and streamline third-party dependencies to reduce potential attack surface and improve load times.
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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