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Security report for mailman4.com

New IT · Technology · N/a

Medium risk. 9 critical or high findings in Security headers, GDPR outside view and 2 other checks.

Security score

61/100

Risk levelMedium

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

Mailman4.com is a niche technology website offering Mailman 3 mailing list management software as a service via the AWS Marketplace. The business is positioned as a small provider focusing on delivering a well-maintained Mailman 3 installation with enhanced features and reliable email delivery. The website content is basic but functional, targeting organizations requiring mailing list solutions, including large enterprises. The technical infrastructure leverages AWS hosting and DNS, with integrations of Google Analytics, Google Tag Manager, and Bugsnag for monitoring and marketing. However, the site lacks comprehensive privacy, cookie, and security policies, and no contact information is provided, which limits user trust and compliance. Security posture is moderate with domain registration protections but missing DNSSEC and security headers. Overall, the site is accessible and operational but would benefit from improved compliance and security transparency.

Scanned

NIS2 and GDPR posture

GDPR outside view
35/ 100 · High
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

9 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';…

  2. GDPR outside view

    These are the privacy signals visitors and data protection authorities look for under GDPR.

    • High

      No Privacy Policy found

      GDPR requires a clear and accessible privacy policy

      What to do: Add a comprehensive privacy policy page and link to it prominently

    • High

      No Cookie Policy found

      GDPR requires clear information about cookie usage

      What to do: Add a dedicated cookie policy explaining cookie usage and purposes

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

Keep watching mailman4.com

This scan found 25 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

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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
72
Security headers
15
Email security
85
DNS health
60
Network security
100
GDPR outside view
35
Average
61

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

The business operates primarily through AWS Marketplace, offering a SaaS model for mailing list management. Its competitive advantage lies in providing a ready-to-use Mailman 3 solution with unlimited lists and members, targeting organizations that require robust email list management. Revenue likely derives from hourly usage fees on AWS Marketplace. The company, New IT, founded in 2020, maintains a small-scale operation with no visible subsidiaries or extensive partnerships beyond AWS. The marketing ecosystem includes Google advertising and tracking tools. Growth indicators are limited due to minimal content and lack of public business data. Strategic partnerships with AWS and use of cloud infrastructure support scalability.

Security posture

The website demonstrates a basic security maturity level. Domain registration includes protective status flags preventing unauthorized changes, which is positive. However, the absence of DNSSEC and security headers reduces DNS and web security robustness. No HTTPS details were provided, which is a critical unknown. The lack of published privacy, cookie, and incident response policies indicates compliance gaps, especially regarding GDPR. No vulnerability disclosure or security.txt files were found, limiting transparency for security researchers. The use of third-party monitoring (Bugsnag) is a positive indicator. Overall, the security posture is moderate but requires enhancements to meet best practices and regulatory compliance.

Recommendations

  1. Enable DNSSEC on the domain to improve DNS security and integrity.
  2. Implement and enforce HTTPS with strong TLS configurations and publish SSL details.
  3. Add comprehensive privacy and cookie policies with GDPR compliance statements.
  4. Publish clear contact information including support and security incident contacts.
  5. Add security headers such as Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options to harden web security.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
New IT
Description
Mailman 4 offers a well-maintained Mailman 3 installation on AWS Marketplace with smart extra features, unlimited lists and members, and reliable email delivery. It promotes Mailman 3 as a mailing list management software with a strong legacy and improved user experience.
Key services
Mailman 3 installation on AWS, Mailing list management, Email delivery services
Content quality
basic
Branding
moderate

Technology

Stack
Google Analytics, Google Tag Manager, Bugsnag, AWS DNS, AWS Marketplace
Platforms
AWS Marketplace
Performance
moderate
Mobile
basic
Accessibility
basic
SEO
basic

Security

Observed score
45/100
Good practices seen
  • Domain status includes clientDeleteProhibited, clientRenewProhibited, clientTransferProhibited, clientUpdateProhibited

Analytics and tracking

Services
Google Analytics, Google Tag Manager, Bugsnag
Tracking level
moderate
Privacy practices
poor

Advertising

Ad networks
Google Ads (AW-612982928)
Transparency
basic

Site quality

Design
basic
User experience
basic
Content relevance
basic
Navigation
basic
Professionalism
basic
Trustworthiness
moderate

Key observations

  1. Website is accessible with no blocking or WAF challenges.
  2. No privacy, cookie, or terms of service policies found on site.
  3. No contact emails, phone numbers, or physical addresses provided.
  4. Website uses multiple Google tracking and marketing scripts.
  5. Content is focused on Mailman 3 software offering on AWS Marketplace.
  6. No security headers or HTTPS information visible in provided data.
  7. Domain is registered with GoDaddy and uses AWS DNS nameservers.
  8. No explicit security or incident response policies published.
  9. No vulnerability disclosure or security.txt found.
  10. Basic website design and navigation with limited content depth.
Technical notes

Notes

The website uses a straightforward technical stack centered on AWS hosting and DNS, with Google Analytics and Tag Manager for tracking and marketing, and Bugsnag for error monitoring. The HTML content is basic with inline styles and minimal SEO optimization. No CMS or advanced frameworks detected. Performance is moderate with asynchronous loading of scripts. Mobile optimization and accessibility are basic but present. The site lacks modern SEO meta tags and structured data. Technical debt is low due to simplicity but modernization opportunities exist in security and compliance implementations.
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

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