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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

81/100

Risk levelLow

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

Viva Engage, formerly known as Yammer, is an enterprise social networking service operated by Microsoft. It is designed to enhance collaboration and communication within organizations by connecting employees across departments and locations. The platform is integrated into the Microsoft 365 ecosystem, targeting enterprise customers and business professionals seeking to improve productivity and knowledge sharing. The website reflects Microsoft's strong brand identity and offers clear calls to action for purchasing Microsoft 365 and logging in. Technically, the website is built using modern web technologies including RequireJS and JavaScript, hosted on Microsoft Azure infrastructure. The site is mobile optimized and accessible, with good SEO practices and performance. Security is robust with HTTPS enforced, though explicit security headers are not visible in the HTML content. Privacy and cookie policies are comprehensive and linked to Microsoft's official privacy portal, indicating compliance with GDPR and other regulations. The security posture is strong with no visible vulnerabilities or exposed sensitive data. However, the lack of a dedicated security policy or vulnerability disclosure page is noted. The WHOIS data for the domain www.yammer.com is not publicly available, likely due to privacy protection or internal corporate registration, which is common for large enterprises. Overall, the site is trustworthy, professional, and well-maintained, representing a mature digital presence for a major Microsoft product.

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 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
100
Security headers
45
Email security
85
DNS health
90
Network security
100
GDPR outside view
68
Average
81

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 business model is SaaS with integration into Microsoft’s cloud services, targeting medium to large enterprises globally. The platform benefits from Microsoft's strong market presence, extensive partner ecosystem, and continuous innovation in AI and cloud technologies. The website links to multiple Microsoft properties, indicating a broad partnership and resource network. Growth indicators include integration with Microsoft Teams and promotion of Microsoft 365 Copilot. The site’s content and navigation cater to IT decision-makers and business users, emphasizing productivity and connectivity.

Security posture

The website demonstrates a mature security posture with HTTPS enforced and no visible security flaws in the HTML content. Privacy policies and cookie consent mechanisms are present and comprehensive, reflecting compliance with GDPR and CCPA. However, the absence of explicit security headers such as Content-Security-Policy and a dedicated security or incident response page suggests room for improvement. No vulnerability disclosure or security.txt file was found, which could enhance transparency and trust. The WHOIS data is not publicly available, which is typical for large corporations but should be monitored for legitimacy. Overall, the site is secure but could benefit from enhanced security communication and transparency.

Recommendations

  1. Implement and publish explicit security headers including Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security.
  2. Create and maintain a dedicated security policy and incident response page accessible from the website footer.
  3. Establish a public vulnerability disclosure program or security.txt file to encourage responsible reporting.
  4. Enhance contact information availability with verified company emails or phone numbers for support and security inquiries.
  5. Regularly audit WHOIS and domain registration information to ensure consistency and legitimacy.
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 collaboration, communication, and productivity.
Key services
Enterprise social networking, Group collaboration, Mobile app for iOS and Android, Integration with Microsoft 365
Content quality
good
Branding
consistent

Technology

Stack
RequireJS, JavaScript, CSS, HTML5
Platforms
Microsoft Azure (implied by asset URLs), Microsoft 365 ecosystem
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

Ad networks
Microsoft 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 fully accessible with rich content about Viva Engage (Yammer).
  2. Strong Microsoft branding and integration with Microsoft 365 ecosystem.
  3. No WHOIS data available publicly for the domain, possibly privacy protected.
  4. No security challenge or WAF blocking detected.
  5. Privacy and cookie policies are comprehensive and linked to Microsoft’s official privacy site.
  6. No contact emails or phone numbers explicitly listed on the homepage; contact via Microsoft support page.
  7. No visible security headers in HTML but HTTPS is enforced.
  8. No adult or questionable content detected.
  9. Website uses modern JavaScript and CSS assets hosted on Microsoft Azure CDN.
Technical notes

Notes

The website uses a modern JavaScript-based front-end with RequireJS for module loading and CSS for styling. Assets are served from Microsoft Azure CDN, ensuring reliable performance and scalability. The site is mobile optimized with responsive images and layouts. Accessibility features such as ARIA labels and semantic HTML are present, supporting diverse user needs. SEO is well implemented with 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. Overall, the technical infrastructure is robust and aligned with enterprise standards.
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. 82/100Low22 findingsView report
  2. 82/100Low22 findingsView report
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