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Security report for yammer.com

Microsoft · Technology · United States

Low risk. 2 critical or high findings in Security headers and GDPR outside view.

Security score

82/100

Risk levelLow

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

Viva Engage, formerly known as Yammer, is an enterprise social networking service owned and operated by Microsoft. It is designed to facilitate communication and collaboration across organizations, enabling employees to connect, share knowledge, and work more efficiently. The platform is integrated within the Microsoft 365 ecosystem, targeting enterprise customers and business professionals. The website reflects Microsoft's branding and offers clear calls to action for purchasing Microsoft 365 and logging in, indicating a subscription-based SaaS business model. Technically, the website is hosted on Microsoft Azure and uses modern web technologies including RequireJS and JavaScript. The site is mobile optimized and accessible, with good SEO practices and performance. Privacy and cookie policies are linked to Microsoft's official privacy site, demonstrating compliance with GDPR and other privacy regulations. However, explicit security headers and incident response information are not visible on the homepage. From a security perspective, the site enforces HTTPS and shows no signs of exposed sensitive data or vulnerable libraries. The absence of WHOIS data for the domain is noted but is consistent with Microsoft's domain management practices. No WAF or blocking mechanisms were detected, and the content is fully accessible. Overall, the site demonstrates a strong security posture and high business credibility. The overall risk assessment is low, with recommendations to enhance security headers, publish explicit security policies, and provide clear security contact channels to further improve trust and compliance.

Scanned

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

NIS2 and GDPR posture

GDPR outside view
68/ 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

2 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 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

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

Keep watching yammer.com

This scan found 14 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
100
Security headers
50
Email security
85
DNS health
90
Network security
100
GDPR outside view
68
Average
82

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

Microsoft positions Viva Engage as a key component of its enterprise collaboration suite, leveraging its extensive Microsoft 365 customer base. The platform's integration with other Microsoft services like Teams and Dynamics 365 strengthens its market position. The business model is subscription-based, targeting medium to large enterprises seeking to improve internal communication and productivity. Microsoft's global presence and brand recognition provide competitive advantages. The website's linkage to partner and marketplace domains indicates a robust ecosystem supporting third-party integrations and partner collaborations. Growth indicators include continuous branding updates and integration with Microsoft's AI and cloud offerings.

Security posture

The website exhibits a mature security posture with enforced HTTPS and no visible security vulnerabilities. Privacy compliance is strong, with links to comprehensive Microsoft privacy policies and cookie consent mechanisms. However, the lack of explicit security headers such as Content Security Policy (CSP) and absence of published incident response or vulnerability disclosure information represent areas for improvement. No contact channels for security incidents were found, which could hinder rapid response to potential threats. Overall, the security culture appears strong but could benefit from enhanced transparency and communication regarding security practices.

Recommendations

  1. Implement and publish comprehensive security headers including CSP, HSTS, and X-Content-Type-Options.
  2. Provide a dedicated security policy page detailing frameworks, certifications, and incident response procedures.
  3. Publish vulnerability disclosure and bug bounty programs to encourage responsible reporting.
  4. Add explicit security contact channels such as security@ or abuse@ email addresses.
  5. Enhance visibility of data protection officer contact information to improve GDPR compliance and trust.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Microsoft
Description
Viva Engage (formerly Yammer) is a Microsoft enterprise social networking service designed to connect people across organizations to improve communication, collaboration, and productivity.
Key services
Enterprise social networking, Group collaboration, Mobile app connectivity, Document and media sharing
Content quality
good
Branding
consistent

Technology

Stack
RequireJS, JavaScript, CSS, HTML5
Platforms
Microsoft Azure (implied by asset URLs)
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • No exposed sensitive data in HTML
  • No visible vulnerable libraries

Analytics and tracking

Tracking level
minimal
Privacy practices
good

Advertising

Marketing tools
Microsoft Advertising
Transparency
good

Site quality

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

Key observations

  1. Website is a Microsoft-owned enterprise collaboration platform branded as Viva Engage.
  2. Content is professional and targeted at enterprise users.
  3. No contact emails or phone numbers explicitly listed on the page.
  4. Privacy and cookie policies are linked to Microsoft official privacy site.
  5. No visible forms on the homepage except login and purchase links.
  6. No security.txt or explicit vulnerability disclosure found.
  7. No incident response or security contact information found.
  8. No suspicious or malicious content detected.
  9. Website uses modern JavaScript and CSS assets hosted on Microsoft Azure.
  10. No WAF or blocking mechanisms detected.
Technical notes

Notes

The website is built using modern web technologies including RequireJS for module loading and JavaScript for dynamic content. Assets are served from Microsoft Azure CDN, ensuring reliable performance and scalability. The site is mobile optimized with responsive design and accessibility features. SEO is well implemented with appropriate meta tags and structured navigation. No CMS is explicitly detected, suggesting a custom or proprietary platform. Performance is moderate with room for optimization in asset loading and caching strategies. Technical risks are minimal but could be reduced further by adopting advanced security headers and continuous monitoring.
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. 82/100 +1Low22 findingsView report
  2. 81/100Low23 findingsView report
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