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Security report for hartzellaviation.com

Hartzell Aviation · Transportation · United States

Medium risk. 7 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

52/100

Risk levelMedium

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

Hartzell Aviation is a prominent aviation company that unites leading general aviation manufacturers, suppliers, and service providers under a family of brands. With a rich heritage dating back to the Wright Brothers era and subsidiaries founded as early as 1917, the company focuses on innovation, quality, and performance in the general aviation sector. Their services span advanced aircraft propeller design, engine accessories, aerospace welding, and maintenance, repair, and overhaul (MRO) operations. The website reflects a professional and consistent brand image targeting aviation professionals and aircraft operators worldwide. Technically, the website is built on WordPress with modern plugins for SEO and analytics, hosted behind Cloudflare DNS. It demonstrates good mobile optimization and SEO practices but lacks some advanced security headers and DNSSEC implementation. The site uses HTTPS and has a cookie consent mechanism aligned with GDPR requirements, although a dedicated privacy policy page was not found in the provided content. From a security perspective, the site benefits from HTTPS and domain transfer protection but could improve by enabling DNSSEC and adding security headers. No critical vulnerabilities or WAF blocks were detected. Contact information is clearly presented, including phone numbers and a contact form with anti-spam measures. Social media presence on major platforms adds to trustworthiness. Overall, Hartzell Aviation's website is a well-structured, professional platform that effectively communicates its business and brand values. Enhancements in privacy policy visibility and security headers would further strengthen its compliance and security posture.

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

7 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 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 hartzellaviation.com

This scan found 26 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

Email alerts on material changes and an exportable JSON history of every change.

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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
60
DNS health
75
Network security
40
GDPR outside view
50
Average
52

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

Hartzell Aviation operates as an acquisition and management company in the general aviation sector, consolidating multiple specialized brands to offer comprehensive aviation products and services. Their market positioning is strong, with Hartzell Propeller recognized as a global leader in propeller technology and other subsidiaries providing engine tech and aerospace welding solutions. The business model leverages brand heritage and innovation to serve aircraft owners, operators, and aviation professionals. The company targets a global audience in the transportation industry, with a large organizational size and multiple subsidiaries. The website content and structure indicate a mature digital presence with ongoing growth and innovation focus.

Security posture

The website demonstrates a moderate to good security posture with mandatory HTTPS enabled and domain transfer protection in place. However, the absence of DNSSEC and security headers such as Content-Security-Policy and X-Frame-Options represents areas for improvement. The contact form includes anti-spam honeypot fields, indicating attention to input validation. No signs of malware, phishing, or exposed sensitive data were found. The use of Cloudflare DNS adds resilience. Overall, the security maturity is adequate but could be enhanced by implementing recommended headers and DNS security measures.

Recommendations

  1. Enable DNSSEC on the domain to protect against DNS spoofing and improve domain security.
  2. Implement standard security headers including Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options to mitigate common web vulnerabilities.
  3. Publish a clear and comprehensive privacy policy page accessible from the website footer or main navigation to improve GDPR compliance and user trust.
  4. Conduct regular security audits of WordPress plugins and themes to identify and remediate vulnerabilities.
  5. Enhance accessibility features and provide more detailed cookie and data retention disclosures to align with privacy best practices.

Contact details published on the site

Addresses
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Hartzell Aviation
Description
Hartzell Aviation brings together leading general aviation manufacturers, suppliers, and service providers to power the future of aviation. The company is a growing family of brands committed to innovation and continuous improvement in general aviation, focusing on quality, performance, and support.
Key services
Aircraft propeller design and manufacturing, Engine accessories and heating solutions, Aviation exhaust systems and custom metal fabrication, Maintenance, repair, and overhaul (MRO) services
Content quality
excellent
Branding
consistent

Technology

Stack
WordPress 6.8.1, Gravity Forms, Yoast SEO, Google Analytics (MonsterInsights plugin), jQuery, Bootstrap, Modernizr, Cloudflare DNS
Frameworks
WordPress
Platforms
Web
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
70/100
Good practices seen
  • HTTPS enforced
  • ClientTransferProhibited domain status
  • Use of Cloudflare DNS

Analytics and tracking

Services
Google Analytics
Tracking level
moderate
Privacy practices
basic

Advertising

Marketing tools
MonsterInsights Google Analytics plugin
Transparency
basic

Site quality

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

Key observations

  1. Professional aviation industry website with strong branding and clear business focus.
  2. Comprehensive information about subsidiaries and leadership team.
  3. Use of modern WordPress CMS with SEO and analytics plugins.
  4. Cookie consent mechanism implemented with GDPR considerations.
  5. No explicit privacy policy or terms of service pages found in provided content.
  6. Contact form present with standard fields and anti-spam honeypot.
  7. Social media presence on major platforms enhances trust.
  8. No security headers detected in provided data; DNSSEC not enabled.
  9. Domain registration is recent but consistent with business branding.
Technical notes

Notes

The website is built on WordPress 6.8.1, utilizing popular plugins such as Gravity Forms for contact forms and Yoast SEO for search engine optimization. It uses jQuery, Bootstrap, and Modernizr for frontend functionality and responsiveness. Google Analytics is integrated via the MonsterInsights plugin for visitor tracking. Hosting is behind Cloudflare DNS, providing DNS-level protection and performance benefits. The site is mobile-optimized with responsive images and layouts. Performance is moderate, with room for improvement in loading speed and accessibility compliance. The technical stack is modern and well-maintained, supporting a professional user experience.
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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