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Security report for mirtes.cz

Ondřej Mirtes · Technology · Czech Republic

Medium risk. 6 critical or high findings in GDPR outside view and Security headers.

Security score

71/100

Risk levelMedium

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

Ondřej Mirtes is an individual software developer and thought leader specializing in PHP static analysis and software development best practices. The website serves as a professional blog and portfolio showcasing his expertise, public talks, and contributions to the PHP community, notably the PHPStan static analysis tool. The site targets developers and technology enthusiasts, primarily in the Czech Republic, and provides rich technical content with embedded videos and slides. Technically, the website is well-implemented with modern fonts, responsive design, and good accessibility features. It uses HTTPS and privacy-focused analytics (Fathom Analytics), but lacks explicit privacy and cookie policies, security headers, and contact information, which are areas for improvement. The absence of WHOIS data reduces domain trustworthiness, though the content quality and professionalism mitigate some concerns. Overall, the site is a high-quality personal developer blog with a strong technical foundation but could enhance its security and compliance posture.

Scanned

NIS2 and GDPR posture

GDPR outside view
10/ 100 · Critical
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

6 findings rated critical or high. Fix these first.

  1. GDPR outside view

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

    • Critical

      EU business without adequate privacy measures

      EU businesses are subject to strict GDPR requirements

      What to do: Implement comprehensive GDPR compliance including privacy policy, cookie consent, and data protection measures

    • 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

    • 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

  2. 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';…

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

Keep watching mirtes.cz

This scan found 18 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
90
Security headers
65
Email security
85
DNS health
75
Network security
100
GDPR outside view
10
Average
71

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 website represents a small-scale personal brand and professional presence of Ondřej Mirtes, focusing on PHP development and static analysis tools. The business model is content-driven, relying on thought leadership, consulting, and community engagement rather than direct sales. The site links to reputable external domains such as PHPStan.org and GitHub, indicating strong integration with the open-source ecosystem. The target audience includes PHP developers and software engineers interested in improving code quality and development practices. The site demonstrates consistent branding and high content quality, positioning Ondřej Mirtes as a respected figure in his niche. There is no evidence of commercial transactions or partnerships, suggesting a primarily informational and professional outreach purpose.

Security posture

The website enforces HTTPS and uses minimal tracking via Fathom Analytics, indicating a privacy-conscious approach. However, the lack of security headers such as Content Security Policy, HSTS, and X-Frame-Options reduces its defense-in-depth posture. No forms or user input fields are present, minimizing attack surface. The absence of explicit privacy, cookie, and security policies, as well as no contact channels for incident response, indicates gaps in compliance and security transparency. The missing WHOIS data is a concern for domain legitimacy and trust. Overall, the security posture is moderate but could be significantly improved by adding security headers, policies, and contact information.

Recommendations

  1. Implement and publish a comprehensive privacy policy and cookie policy to improve GDPR compliance and user trust.
  2. Add standard security headers (CSP, HSTS, X-Frame-Options, X-Content-Type-Options) to enhance security posture.
  3. Provide clear contact information, including an email address for security incidents and general inquiries.
  4. Investigate and resolve the missing WHOIS data to improve domain legitimacy and trustworthiness.
  5. Consider adding a vulnerability disclosure policy or security.txt file to facilitate responsible reporting.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Ondřej Mirtes
Description
Vývojář s nadšením pro user experience, Apple, počítačové hry, cestování a kofein.
Key services
Technical blogging, Public speaking, PHP static analysis tool development (PHPStan), Consulting
Content quality
excellent
Branding
consistent

Technology

Stack
PHP, JavaScript, Google Fonts, Fathom Analytics
Performance
fast
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
75/100
Good practices seen
  • HTTPS enforced (implied by og:url https)
  • No forms collecting sensitive data
  • No exposed credentials or sensitive data

Analytics and tracking

Services
Fathom Analytics
Tracking level
minimal
Privacy practices
basic

Advertising

Tracking pixels
Fathom Analytics
Transparency
basic

Site quality

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

Key observations

  1. Website is a personal blog of a Czech developer focused on PHP and software development.
  2. No WHOIS data available, which is unusual and reduces domain trust.
  3. No privacy, cookie, or terms of service policies found.
  4. No contact emails or phone numbers explicitly provided on the site.
  5. Site uses HTTPS and modern web fonts, with good accessibility and SEO practices.
  6. No forms or data collection points detected.
  7. Uses Fathom Analytics for privacy-focused tracking.
  8. No security headers detected in provided data; recommend adding.
  9. No signs of adult or questionable content.
  10. No WAF or blocking detected; site fully accessible.
Technical notes

Notes

The website uses a clean, modern tech stack with PHP backend and JavaScript frontend, leveraging Google Fonts and Fathom Analytics for lightweight tracking. The HTML structure is semantic and accessible, with good mobile optimization and SEO metadata including Open Graph and Twitter Cards. No CMS or hosting provider information is directly detectable. Performance appears fast with minimal external dependencies. The site lacks advanced frameworks but is well-structured for a personal blog. There is no evidence of technical debt or outdated libraries. Opportunities exist to improve security headers and add structured data for enhanced SEO and compliance.
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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