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Security report for pub400.com

POWERbunker.com · Technology · N/a

High risk. 11 critical or high findings in Email security, Network security and 3 other checks.

Security score

42/100

Risk levelHigh

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

PUB400.COM operates as a free and public IBM i 7.5 server platform aimed at the IBM i community, providing users with a programming and learning environment. The website serves over 55,000 users worldwide and offers features such as user profile creation, disk storage, and support for various programming languages including CL, RPG, SQL, and COBOL. The business model is community-focused and educational, with no commercial transactions evident. Technically, the site uses basic HTML, CSS, and IBM i Net.Data technology, with no advanced CMS or frameworks detected. Performance is moderate with basic mobile optimization and accessibility. Security posture is limited, lacking DNSSEC, security headers, and visible HTTPS enforcement, and no privacy or cookie policies are published. The domain registration is stable and consistent with the website's purpose, though the domain age is younger than the claimed service history, suggesting possible re-registration or domain change. Overall, the site is functional and trustworthy for its niche audience but requires improvements in security and privacy compliance to enhance trust and protection.

Scanned

NIS2 and GDPR posture

GDPR outside view
50/ 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

11 findings rated critical or high. Fix these first.

  1. Email security

    SPF, DKIM and DMARC stop others sending email that looks like it comes from your domain, a common route to phishing and invoice fraud.

    • Critical

      No email authentication configured

      Domain is vulnerable to email spoofing

      What to do: Implement SPF, DKIM, and DMARC immediately

  2. Network security

    Services reachable from the internet are the first thing attackers probe. Anything open that does not need to be should be closed.

    • Critical

      Critical Service Exposed: Telnet

      Port 23 (Telnet) is publicly accessible - Telnet - Unencrypted remote access

      What to do: Immediately restrict access to Telnet using firewall or VPN

      • NIS2 21(2)(e)
      • IR 2024/2690 6.7.2(f): Implementing Regulation (EU) 2024/2690, Annex point 6.7.2(f): Network security
      • NIST CM-7: NIST SP 800-53 Rev. 5 CM-7: Least Functionality
      • NIST SC-7: NIST SP 800-53 Rev. 5 SC-7: Boundary Protection
    • Critical

      Critical Service Exposed: PostgreSQL

      Port 5432 (PostgreSQL) is publicly accessible - PostgreSQL - Database server

      What to do: Immediately restrict access to PostgreSQL using firewall or VPN

      • NIS2 21(2)(e)
      • IR 2024/2690 6.7.2(f): Implementing Regulation (EU) 2024/2690, Annex point 6.7.2(f): Network security
      • NIST CM-7: NIST SP 800-53 Rev. 5 CM-7: Least Functionality
      • NIST SC-7: NIST SP 800-53 Rev. 5 SC-7: Boundary Protection

  3. 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 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';…

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

Keep watching pub400.com

This scan found 29 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

€25per month

  • 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
47
Security headers
25
Email security
60
DNS health
70
Network security
0
GDPR outside view
50
Average
42

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 · found on this site
  • 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

PUB400.COM holds a niche position as the largest public IBM i server community platform, targeting developers and learners interested in IBM i operating system programming. Its competitive advantage lies in offering free access to a specialized server environment with community support through forums and chat. The business model is non-commercial, focusing on education and community engagement. Growth indicators include an average of 35 new users per day and a user base exceeding 55,000. The partnership with POWERbunker.com suggests a stable operational backing. However, the lack of formal business contact information and policies limits broader commercial credibility. Strategic observations include the need to formalize privacy and security policies and improve technical infrastructure to support scalability and compliance.

Security posture

The website demonstrates a basic security maturity level with some protective measures such as domain transfer lock (clientTransferProhibited). However, critical gaps exist including absence of DNSSEC, no visible HTTPS enforcement or security headers, and no published privacy or incident response policies. The lack of cookie consent mechanisms and vulnerability disclosure processes further weakens compliance with GDPR and best practices. No exposed sensitive data or malware indicators were found, but the security posture is insufficient for higher trust levels. Incident response readiness appears minimal with no dedicated contact channels for security issues. Overall, the security culture is informal and could benefit from structured policies and technical enhancements.

Recommendations

  1. Enable DNSSEC and enforce HTTPS with HSTS to improve domain and transport security.
  2. Publish comprehensive privacy and cookie policies with GDPR compliance details.
  3. Implement security headers such as Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options.
  4. Add clear contact information including security and abuse email addresses for incident response.
  5. Establish a vulnerability disclosure policy and security.txt file to encourage responsible reporting.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
POWERbunker.com
Description
PUB400.COM is a free and public IBM i 7.5 server offering users the ability to create user profiles with 500MB disk storage and private libraries. It serves as a learning and testing environment for IBM i operating system programming and development.
Key services
Free IBM i 7.5 server access, User profile creation, Programming environment for CL, RPG, SQL, COBOL, node.js, Community forums and chat
Content quality
good
Branding
moderate

Technology

Stack
IBM i 7.5, Net.Data IBM i, HTML, CSS, JavaScript
Platforms
IBM i
Performance
moderate
Mobile
basic
Accessibility
basic
SEO
basic

Security

Observed score
40/100
Good practices seen
  • Domain status clientTransferProhibited

Analytics and tracking

Services
Pingdom
Tracking level
minimal
Privacy practices
poor

Advertising

Tracking pixels
Pingdom
Transparency
basic

Site quality

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

Key observations

  1. Website provides a free public IBM i server environment for learning and development.
  2. No privacy, cookie, or terms of service policies found.
  3. No contact emails or phone numbers explicitly provided.
  4. No security policies or incident response information available.
  5. Website uses basic HTML and CSS with minimal JavaScript.
  6. No CMS or advanced frameworks detected.
  7. No HTTPS enforcement information visible in HTML content.
  8. External links mostly relate to community and hosting partners.
  9. Pingdom script used for performance monitoring.
  10. No adult or questionable content detected.
Technical notes

Notes

The website is built on IBM i 7.5 platform using Net.Data technology, serving static and dynamic content with basic HTML and CSS. No modern CMS or JavaScript frameworks are detected, indicating a legacy or minimalist technical stack. Performance is moderate with some mobile responsiveness but limited accessibility features. The use of external scripts is minimal, primarily for performance monitoring via Pingdom. Hosting details are limited but registrar information is clear. Technical debt may exist due to lack of modern security practices and absence of automated compliance tools. Opportunities include modernization of front-end technologies, improved mobile optimization, and integration of security best practices to reduce operational risks.
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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