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Security report for heerema.com

Heerema · Energy · N/a

Low risk. 3 critical or high findings in Security headers and SSL/TLS.

Security score

76/100

Risk levelLow

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

Heerema is a well-established company specializing in offshore marine contracting, fabrication, and engineering solutions primarily serving the energy and transportation sectors. The company offers a broad range of services including offshore wind projects, transport and installation, decommissioning, and fabrication services. The website reflects a professional corporate presence with consistent branding and a focus on quality, safety, and social responsibility. The domain age and registration details support the legitimacy and maturity of the business. Technically, the website is built on the HubSpot CMS platform, leveraging modern web technologies such as Google Analytics, Google Tag Manager, and RequireJS. The site is moderately optimized for performance and mobile responsiveness, with basic SEO and accessibility features. However, some improvements could be made in accessibility and SEO optimization. From a security perspective, the website uses HTTPS with a good SSL configuration but lacks DNSSEC and visible security headers, which are recommended for enhanced security. There is no publicly available security policy or incident response information, which could be improved to increase trust and compliance. Privacy and cookie policies are present with a consent mechanism, but GDPR compliance indicators are basic. Overall, the website presents a trustworthy and professional image with moderate technical and security maturity. Strategic improvements in security headers, DNSSEC, and published security policies would enhance the security posture and compliance standing.

Scanned

NIS2 and GDPR posture

GDPR outside view
83/ 100 · Low
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

3 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 X-Frame-Options header

      Prevents clickjacking attacks

      What to do: Add "X-Frame-Options: DENY" or "X-Frame-Options: SAMEORIGIN"

  2. SSL/TLS

    TLS encrypts the connection and proves the site is really yours. Weak or expiring certificates trigger browser warnings and put traffic at risk.

    • High

      Weak Protocols Supported

      Server supports weak protocols: TLSv1.1

      What to do: Disable TLS 1.0, TLS 1.1, and all SSL versions

      • CWE-327
      • OWASP A04:2025
      • ASVS V12.1.1
    • High

      Weak SSL Key Length

      SSL certificate uses 256-bit key, which is considered weak

      What to do: Use at least 2048-bit RSA or 256-bit ECC key

      • CWE-326
      • OWASP A04:2025
      • Mozilla TLS: Mozilla Server Side TLS 6.0 intermediate: rsa_key_size 2048

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

Keep watching heerema.com

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.

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
57
Security headers
55
Email security
70
DNS health
90
Network security
100
GDPR outside view
83
Average
76

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

Heerema operates in the offshore energy and marine contracting industry, targeting industrial clients requiring complex offshore transport, installation, and fabrication services. The company benefits from a long-established market presence since 1998, with a diversified service portfolio including offshore wind and decommissioning. Their business model is B2B focused, leveraging innovation and quality as competitive advantages. The company maintains an active digital presence with social media engagement and uses HubSpot for marketing and analytics. No direct competitors or partners were identified from the website content, but the company demonstrates a strong commitment to sustainability and social responsibility, which may enhance its market positioning.

Security posture

The current security posture is moderate. HTTPS is enforced, and domain registration includes protective status flags. However, the absence of DNSSEC and security headers such as Content-Security-Policy and X-Frame-Options represents a security gap. No incident response or vulnerability disclosure information is publicly available, limiting transparency. The use of third-party analytics and marketing tools introduces moderate user tracking, but privacy policies and cookie consent mechanisms are implemented. No critical vulnerabilities or exposed sensitive data were detected in the analyzed content.

Recommendations

  1. Enable DNSSEC on the domain to protect against DNS spoofing and improve domain security.
  2. Implement standard security headers (Content-Security-Policy, X-Frame-Options, X-Content-Type-Options) to mitigate common web vulnerabilities.
  3. Publish a clear security policy and incident response contact information to improve transparency and trust.
  4. Add a vulnerability disclosure policy or security.txt file to facilitate responsible reporting of security issues.
  5. Enhance accessibility and SEO features to improve user experience and search engine visibility.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Heerema
Description
Heerema is a company specializing in marine contracting, offshore wind, offshore transport and installation, offshore decommissioning, fabrication, and engineering solutions. They provide vessels, barges, and fabrication yards services with a focus on innovation and quality.
Key services
Offshore Wind, Offshore Transport and Installation, Offshore Decommissioning, Fabrication, Engineering Solutions
Content quality
good
Branding
consistent

Technology

Stack
Google Analytics, Google Tag Manager, HubSpot, RequireJS, jQuery
Frameworks
HubSpot CMS
Platforms
HubSpot
Performance
moderate
Mobile
good
Accessibility
basic
SEO
basic

Security

Observed score
65/100
Good practices seen
  • HTTPS enabled
  • Domain status includes clientTransferProhibited and serverUpdateProhibited flags

Analytics and tracking

Services
Google Analytics, Google Analytics 4, HubSpot Analytics
Tracking level
moderate
Privacy practices
basic

Advertising

Tracking pixels
HubSpot Analytics
Marketing tools
HubSpot marketing tools
Transparency
basic

Site quality

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

Key observations

  1. Website is accessible but the provided HTML is a 404 error page content.
  2. Site uses HubSpot CMS and marketing/analytics tools extensively.
  3. No explicit security or incident response policies published.
  4. Privacy and cookie policies are present but basic.
  5. No phone numbers or emails explicitly found in the HTML content.
  6. Social media presence on LinkedIn, Facebook, Instagram confirmed.
  7. No terms of service or vulnerability disclosure pages detected.
  8. No security headers detected in the HTML content; SSL is enabled.
  9. No suspicious or malicious content detected.
Technical notes

Notes

The website is built on HubSpot CMS, utilizing modern JavaScript libraries such as RequireJS and jQuery, and integrates Google Analytics and Tag Manager for tracking. The site loads multiple external resources from trusted domains and uses responsive design techniques for mobile optimization. Performance is moderate, with potential for improvement in loading speed and accessibility compliance. The domain is registered with CSC Corporate Domains, Inc., a reputable registrar, and the domain age supports a mature business presence. No major technical debt or deprecated technologies were detected.
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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