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Security report for outlook.com

Microsoft Corporation · Technology · United States

Low risk. 3 critical or high findings in Security headers.

Security score

80/100

Risk levelLow

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

Microsoft Corporation operates the website www.microsoft.com, specifically the Microsoft 365 Outlook product page, offering email and calendar software integrated with Microsoft 365 services. The company is a global technology leader providing productivity software and cloud services to both consumers and businesses. The website showcases Outlook's capabilities, including multi-account management, AI-powered features like Copilot, and cross-platform availability on desktop, mobile, and web. The site is professionally designed with excellent content quality, clear navigation, and strong branding consistency. Technically, the website leverages modern web technologies including Adobe Experience Manager (AEM) as its CMS, Adobe Helix RUM for performance monitoring, and various Microsoft-hosted media and script resources. The site is optimized for mobile devices, accessibility, and SEO, ensuring a fast and user-friendly experience. Security best practices are evident with HTTPS enforcement, comprehensive security headers, and no detected vulnerabilities or exposed sensitive data. From a security posture perspective, Microsoft maintains strong policies and certifications such as ISO 27001 and SOC 2, with dedicated incident response channels and vulnerability disclosure programs. Privacy compliance is robust, with clear privacy and cookie policies, GDPR adherence, and mechanisms for user consent. The WHOIS data is privacy protected, which is typical for a large enterprise, and does not raise concerns given the brand's global recognition. Overall, the website and business demonstrate a high level of digital maturity, security awareness, and compliance. The risk level is low, with no critical issues detected. Strategic recommendations include maintaining regular security audits, continuing to update technical components, and enhancing user education on security threats to sustain trust and resilience.

Scanned

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

NIS2 and GDPR posture

GDPR outside view
88/ 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

3 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';…

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Keep watching outlook.com

This scan found 15 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.

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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
95
Security headers
15
Email security
93
DNS health
90
Network security
100
GDPR outside view
88
Average
80

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 outlook.com, from OffSeq Breach.

Total records
34,240,644
Employees
19,426
Customers
196,307
Third parties
34,024,911
Weak passwords
9%

Latest record dated 2026-06-18 · 9,299 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 outlook.com.

Select it in the checkout above.

Masked preview

  • –outlook.com2026-06-18
  • –outlook.com2026-06-18
  • –smtp-mail.outlook.com2026-06-18
  • –outlook.com2026-06-18
  • –outlook.com2026-06-18

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 holds a dominant market position in productivity software and cloud services, with Outlook being a flagship email and calendar product integrated into the Microsoft 365 ecosystem. The business model is subscription-based with additional revenue from software licenses and cloud services. Target customers include individual consumers, small to large enterprises, and educational institutions. Microsoft's extensive partnership ecosystem and subsidiary services enhance its competitive advantage. Growth indicators include AI integration (Copilot) and cross-platform support. The company operates globally with a strong brand and extensive resources, enabling continuous innovation and market expansion.

Security posture

Microsoft's security posture is mature and comprehensive, supported by internationally recognized certifications and frameworks such as ISO 27001 and NIST. The website employs HTTPS with strong SSL configurations and security headers to protect user data. Incident response and vulnerability disclosure processes are well established, with clear contact channels. No vulnerabilities or exposed sensitive data were detected on the analyzed page. Privacy policies and cookie consent mechanisms align with GDPR requirements, reflecting a strong compliance culture. Overall, Microsoft demonstrates a proactive security approach with continuous monitoring and user protection.

Recommendations

  1. Maintain continuous security audits and penetration testing to identify emerging threats.
  2. Ensure all third-party libraries and scripts are regularly updated to mitigate vulnerabilities.
  3. Enhance user education on phishing and social engineering risks through visible guidance.
  4. Expand transparency on data retention policies and user data handling practices.
  5. Invest in long-term security strategy focusing on zero-trust architecture and AI-driven threat detection.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Microsoft Corporation
Description
Microsoft Outlook provides email and calendar software integrated with Microsoft 365, supporting multiple email accounts including Gmail, Yahoo, and iCloud. Available on desktop, mobile, and web.
Key services
Email, Calendar, Contacts, Microsoft 365 integration, AI-powered Copilot features
Content quality
excellent
Branding
consistent

Technology

Stack
JavaScript, Adobe Helix RUM, AEM (Adobe Experience Manager), Universal Media Player, HTML5, CSS3
Frameworks
AEM, Helix RUM
Platforms
Web, Mobile
Performance
fast
Mobile
excellent
Accessibility
good
SEO
excellent

Security

Observed score
90/100
Good practices seen
  • HTTPS enforced
  • Security headers present
  • No exposed sensitive data
  • Secure forms

Analytics and tracking

Services
Adobe Helix RUM, Contentsquare, Microsoft Exp Analytics
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Contentsquare, Mediapixel, Adobe Helix RUM
Marketing tools
Microsoft Exp Services, ClickTale, ContentBackfill
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 multimedia.
  2. Strong brand presence with Microsoft branding and consistent messaging.
  3. Comprehensive security and privacy policies linked.
  4. Modern technology stack and CMS used.
  5. No suspicious or malicious content detected.
  6. No direct contact emails or phone numbers found on this page.
  7. Multiple calls to action for sign-in, download, and account creation.
  8. AI-powered features like Copilot are prominently featured.
  9. Good SEO and accessibility practices observed.
Technical notes

Notes

The website is built on a robust technical infrastructure using Adobe Experience Manager (AEM) as the CMS, supported by Adobe Helix RUM for real user monitoring and performance analytics. The tech stack includes modern JavaScript frameworks and responsive design techniques ensuring excellent mobile optimization and accessibility. Hosting is likely on Microsoft Azure, providing scalability and reliability. Performance is fast with optimized media delivery and lazy loading. SEO best practices are implemented with proper meta tags and structured data. Technical risks are minimal, with opportunities for modernization focused on continuous integration of AI features and enhanced user interaction capabilities.
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. 81/100 +3Low22 findingsView report
  2. 78/100Low20 findingsView report
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