
Is thunderbird.net Safe? Security Analysis for Mozilla Foundation
Check if thunderbird.net is a scam or legitimate. Free security scan and reviews.

AI Summary
Thunderbird is a free, open-source email and productivity application developed under the Mozilla Foundation umbrella. It offers desktop clients for Windows, Linux, and macOS, as well as a mobile app for Android. The website is professionally designed, multilingual, and provides clear navigation to products, resources, and community engagement. It supports donations and contributions, reflecting its open-source business model. The site leverages secure HTTPS connections and official download links, reinforcing trust and security. However, WHOIS data for the domain is unavailable, which is a minor concern but likely due to privacy or registry policies. Overall, Thunderbird holds a strong market position as a leading open-source email client with a large user base and community support.
Detected Technologies
🧠AI Business Intelligence
Technology stack, business insights, and market analysis powered by AI.
Business Intelligence
Market & Strategic Analysis
Thunderbird operates as an important entity within the technology sector, focusing on open-source software distribution. Its business model relies on community engagement, donations, and partnerships under the Mozilla Foundation. The target audience includes general users seeking a free, customizable email client with productivity features. The website's multilingual support and clear calls to action for downloads and donations indicate a mature digital presence. The partnership with Mozilla and use of official domains enhance credibility. No direct revenue streams are visible on the site, consistent with open-source funding models. The ecosystem includes support forums, blogs, and contribution channels, fostering user involvement and growth.
Security Posture Analysis
Comprehensive Security Assessment
The website demonstrates a good security posture with enforced HTTPS, modern security headers, and secure download links. No exposed sensitive data or vulnerable scripts were detected in the HTML content. However, explicit security policies, incident response contacts, and vulnerability disclosure mechanisms are not publicly available, which could be improved to enhance transparency and trust. The absence of a security.txt file or dedicated security page limits direct communication channels for security issues. Overall, the site follows best practices for web security but could benefit from more explicit security governance documentation.
Strategic Recommendations
Priority Actions for Security Improvement
Publish a dedicated security policy and incident response page to improve transparency.
✨Observations
AI-powered comprehensive website and business analysis.
AI-Enhanced Website Analysis
Business Insights
Mozilla Foundation
Thunderbird is a free email application that’s easy to set up and customize - and it’s loaded with great features!
excellent
consistent
Technical Stack
fast
excellent
good
good
Security Assessment
- HTTPS enforced
- Use of security headers
- No exposed sensitive data in HTML
- Secure download links with SSL
Analytics & Tracking
Advertising & Marketing
Website Quality Assessment
Key Observations
Website is fully accessible with rich content and professional design.
🛡️Security Headers
HTTP security headers analysis and recommendations.
Security Headers
HTTP security headers analysis
Missing X-Content-Type-Options header
MEDIUMPrevents MIME type sniffing
Missing Content-Security-Policy header
HIGHControls resources the browser is allowed to load
Missing X-XSS-Protection header
MEDIUMLegacy XSS protection (deprecated but still recommended)
Missing Referrer-Policy header
LOWControls referrer information sent with requests
Missing Permissions-Policy header
MEDIUMControls browser features and APIs
Sensitive data may be cached
LOWCache-Control header should include "no-store" for sensitive pages
👤GDPR Compliance
Privacy and data protection assessment under GDPR regulations.
GDPR Compliance
Privacy and data protection assessment
No Cookie Consent Banner found
HIGHGDPR requires explicit consent for non-essential cookies
No Data Protection Officer mentioned
LOWLarge organizations may need to designate a DPO under GDPR
Privacy policy may not be GDPR compliant
MEDIUMPrivacy policy lacks explicit GDPR compliance elements
GDPR Compliance Analysis
🛡️NIS2 Compliance
Network & Information Security Directive compliance assessment.
NIS2 Compliance
Network & Information Security Directive
No information security framework found
HIGHNIS2 requires documented cybersecurity and information security measures
No vulnerability disclosure policy
MEDIUMNIS2 encourages coordinated vulnerability disclosure
No security policy documentation found
HIGHNIS2 requires documented cybersecurity governance and risk management
No incident response procedures found
HIGHNIS2 requires documented incident response and business continuity plans
No business continuity planning found
MEDIUMNIS2 emphasizes operational resilience and business continuity
No security contact information
HIGHNIS2 requires clear incident reporting channels
No vulnerability reporting mechanism
MEDIUMClear vulnerability reporting supports coordinated disclosure
No NIS2 reference found
LOWConsider explicitly mentioning NIS2 compliance efforts
Critical sector without clear security compliance
HIGHDetected sectors: energy, transport, digital
📧Email Security
SPF, DKIM, and DMARC validation and email security assessment.
Email Security
SPF, DKIM, and DMARC validation
No BIMI Record
LOWBIMI displays brand logos in email clients
No MTA-STS Policy
MEDIUMMTA-STS enforces TLS for email delivery
No TLS-RPT Record
LOWTLS-RPT provides reporting for email TLS issues
SPF Details
DKIM Selectors Found
DMARC Details
🏆SSL/TLS Security
Certificate validity and encryption analysis.
SSL/TLS Security
Certificate validity and encryption analysis
SSL Certificate Expires Within 90 Days
MEDIUMSSL certificate expires in 81 days
Weak SSL Key Length
HIGHSSL certificate uses 256-bit key, which is considered weak
Partial SSL/TLS Assessment
LOWCompleted 2 of 4 security checks due to time constraints
Certificate Details
OCSP Status
📊DNS Health
DNS configuration and security assessment.
DNS Health
DNS configuration and security assessment
DNSSEC Not Enabled
MEDIUMDNSSEC is not configured for this domain
CAA Records Not Configured
LOWCertificate Authority Authorization (CAA) records not found
Domain Registration Details
DNS Records
DNSSEC Status
DNS Performance
SPF Analysis
⚡Network Security
Port scanning and network exposure analysis.
Network Security
Port scanning and network exposure analysis
Good Network Security Posture
LOWNo unnecessary services detected on common risky ports
🔧Technical Analysis
Detailed technical findings and analysis from AI assessment.
Technical Analysis
Comprehensive security assessment findings