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Security report for promaintain.de

promaintain GmbH & Co. KG · Energy · Germany

Medium risk. 4 critical or high findings in Security headers and GDPR outside view.

Security score

73/100

Risk levelMedium

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

promaintain GmbH & Co. KG is a reputable European full-service provider specializing in turnaround and project management, as well as innovative industrial scaffolding solutions for the process industry. The company leverages digital innovations such as BIM-based planning and digital twins to enhance project efficiency, safety, and cost transparency. Positioned as a trusted partner with a strong client base in the process industry, promaintain operates under the umbrella of the PERI Group, enhancing its market credibility. Technically, the website employs modern front-end technologies including jQuery, Bootstrap, and Swiper.js, complemented by a robust cookie consent mechanism ensuring GDPR compliance. The site is mobile-optimized with good SEO practices and basic accessibility features. However, explicit security headers are not evident, suggesting room for improvement in security hardening. Security posture is solid with HTTPS enforced and no exposed sensitive data, but lacks published incident response or vulnerability disclosure policies. Cookie management is comprehensive, covering necessary and optional cookies with user consent. Contact information is clearly presented, including email, phone, and a contact form with anti-spam measures. Overall, the website reflects a professional and trustworthy business presence with moderate technical sophistication and good privacy compliance. Strategic enhancements in security headers and incident response transparency would further strengthen the security posture and trustworthiness.

Scanned

NIS2 and GDPR posture

GDPR outside view
68/ 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

4 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 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 promaintain.de

This scan found 20 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
100
Security headers
20
Email security
80
DNS health
70
Network security
100
GDPR outside view
68
Average
73

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

promaintain operates in the energy and manufacturing sectors, targeting process industry clients requiring specialized project and turnaround management services. Its business model focuses on B2B full-service offerings integrating engineering, consulting, and digital innovations. The company benefits from a strong market position as a leading European provider with a medium-sized workforce and a history spanning nearly two decades. Its affiliation with the PERI Group provides additional market leverage and brand recognition. The company maintains active social media channels and showcases certifications and client references, reinforcing its credibility. Growth potential lies in expanding digital service offerings and deepening client partnerships within the process industry.

Security posture

The website demonstrates a mature security posture with enforced HTTPS and a comprehensive cookie consent mechanism aligned with GDPR requirements. The presence of botcheck in the contact form indicates attention to spam prevention. However, the absence of explicit security headers such as Content-Security-Policy and HSTS reduces defense-in-depth. No published security policy or incident response contacts limit transparency and preparedness communication. No vulnerabilities or exposed sensitive data were detected in the HTML content. Overall, the security posture is good but could be improved by implementing recommended HTTP headers, publishing security policies, and establishing a vulnerability disclosure process.

Recommendations

  1. Implement and enforce security headers including Content-Security-Policy, X-Frame-Options, X-Content-Type-Options, and Strict-Transport-Security.
  2. Publish a clear security policy and incident response contact information on the website.
  3. Establish and publicize a vulnerability disclosure program or security.txt file.
  4. Enhance accessibility features to meet higher compliance standards.
  5. Regularly audit third-party libraries and update to mitigate potential vulnerabilities.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
promaintain GmbH & Co. KG
Description
promaintain is a leading full-service provider in Europe offering tailored solutions for engineering, project management, and consulting, specializing in turnaround and project management as well as innovative industrial scaffolding for the process industry.
Key services
Turnaroundmanagement, Scaffolding Engineering Solutions, Fachberatung (Consulting), 3D-Laserscanning
Content quality
good
Branding
consistent

Technology

Stack
jQuery 3.7.1, Bootstrap CSS, Swiper.js, FontAwesome, CookieControl (Civic Computing), Isotope, Infinite Scroll, Magnific Popup, WOW.js (animation), jVectorMap
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
75/100
Good practices seen
  • HTTPS enforced (implied by canonical URLs and Google Maps API usage)
  • Cookie consent mechanism with granular control
  • No exposed sensitive data in HTML
  • Use of CAPTCHA or botcheck in contact form

Analytics and tracking

Tracking level
minimal
Privacy practices
good

Advertising

Marketing tools
CookieControl for consent management
Transparency
basic

Site quality

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

Key observations

  1. Website is fully accessible with no blocking or WAF challenges.
  2. Comprehensive cookie consent mechanism with optional cookies for Google Maps and YouTube videos.
  3. Contact form includes botcheck field indicating anti-spam measures.
  4. Social media presence on LinkedIn and Instagram consistent with business sector.
  5. Website content is in German with English language option available.
  6. No explicit security.txt or vulnerability disclosure found.
  7. No explicit security policy or incident response contact found.
  8. Website uses modern front-end libraries and frameworks.
  9. No visible tracking or analytics scripts detected beyond cookie control.
  10. Business is part of PERI Group, a known entity in scaffolding and construction.
Technical notes

Notes

The website uses a modern front-end technology stack with jQuery 3.7.1, Bootstrap CSS, Swiper.js for sliders, FontAwesome icons, and various plugins for animations, maps, and popups. CookieControl by Civic Computing manages cookie consent with granular user options. The site is mobile-optimized and SEO-friendly with proper meta tags and Open Graph data. No explicit CMS was detected, suggesting a custom or proprietary solution. Performance is moderate with room for optimization. Hosting provider details are not explicit. The site includes integration with Google Maps and YouTube via optional cookies, loaded lazily upon user consent. Overall, the technical infrastructure supports a professional and user-friendly experience but could benefit from enhanced security headers and performance tuning.
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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