Skip to main content

Security report for isotec.de

ISOTEC GmbH · Real Estate · Germany

Medium risk. 4 critical or high findings in Security headers and SSL/TLS.

Security score

69/100

Risk levelMedium

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

ISOTEC GmbH operates a professional website focused on building protection services including moisture damage remediation, mold removal, and balcony renovation. The company positions itself as a specialist with over 150 locations, TÜV-Rheinland certification, and a strong emphasis on quality and customer trust. The website is well-structured, professionally designed, and targets homeowners, tenants, and business customers primarily in Germany. Technically, the site is built on TYPO3 CMS and integrates modern analytics and marketing tools such as Google Analytics, Hotjar, and Cookiebot for GDPR-compliant cookie management. Security posture is solid with HTTPS and consent mechanisms, though explicit security policies and headers could enhance trust further. WHOIS data is minimal but consistent with the hosting provider, showing no suspicious patterns. Overall, the website demonstrates a mature digital presence with good compliance and user experience.

Scanned

NIS2 and GDPR posture

GDPR outside view
88/ 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

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. 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

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

Keep watching isotec.de

This scan found 23 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.

Billed monthly to your card. Cancel anytime. See sample alerts.

Full report

€39.90one-time

  • The complete analysis as a PDF you can cite
  • Email delivery with an unlock code
  • Lifetime access to this report

Prices incl. 21% VAT. Secure checkout by Mollie; sold by SEQ SIA, Latvia.

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
30
Email security
60
DNS health
65
Network security
100
GDPR outside view
88
Average
69

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

ISOTEC GmbH is positioned as a leading service provider in the real estate sector specializing in moisture and mold damage remediation and building protection. Their business model is service-oriented with a broad network of certified specialist contractors. The company leverages certifications like TÜV-Rheinland and offers long-term warranties to build customer confidence. Their marketing ecosystem includes Google and Microsoft advertising platforms, supported by extensive tracking and analytics to optimize customer acquisition. The website's content and navigation are tailored to facilitate lead generation via contact forms and location-based specialist searches. The absence of direct contact emails or phone numbers suggests a controlled communication channel strategy. The company appears to have a strong market presence in Germany with a large operational scale.

Security posture

The website enforces HTTPS and employs a comprehensive cookie consent mechanism compliant with GDPR, indicating a good privacy and security baseline. Use of Cookiebot and Hotjar shows attention to user consent and behavioral analytics. However, the absence of explicit security policy pages, incident response contacts, and vulnerability disclosure mechanisms represents gaps in transparency and readiness. No security headers were detected in the provided data, which could be improved to mitigate common web threats. No vulnerabilities or exposed sensitive data were found in the HTML content. Overall, the security posture is good but could benefit from formalized policies and enhanced HTTP security headers.

Recommendations

  1. Publish a dedicated security policy page outlining security practices and compliance.
  2. Add incident response contact information such as security@ or abuse@ email addresses.
  3. Implement and publish a vulnerability disclosure policy or security.txt file.
  4. Enhance HTTP security headers including Content-Security-Policy, X-Content-Type-Options, and Strict-Transport-Security.
  5. Consider adding direct verified contact emails and phone numbers for improved business credibility.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
ISOTEC GmbH
Description
ISOTEC ist spezialisiert auf die Beseitigung von Schimmel und Feuchtigkeitsschäden sowie die Gebäudetrocknung und den Bautenschutz. Wir bieten Qualität.
Key services
Abdichtungen, Schimmelbeseitigung, Balkonsanierung, Kellerbodensanierung, Kellerdeckendämmung, Garagensanierung, Innendämmung, Trocknung
Content quality
excellent
Branding
consistent

Technology

Stack
TYPO3 CMS, Google Tag Manager, Cookiebot, Google Maps API, Hotjar
Frameworks
TYPO3 CMS
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Cookie consent with granular controls
  • No exposed sensitive data in HTML

Analytics and tracking

Services
Google Analytics, Hotjar, Outbrain
Tracking level
extensive
Privacy practices
good

Advertising

Ad networks
Google Ads, Microsoft Advertising, Outbrain
Tracking pixels
Hotjar, Cookiebot, Outbrain
Marketing tools
Google Ads Enhanced Conversions, Cookiebot Consent Management
Transparency
good

Site quality

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

Key observations

  1. Website is fully accessible with no blocking or WAF challenges.
  2. Comprehensive cookie consent mechanism implemented with detailed cookie declaration.
  3. No explicit terms of service page found.
  4. Contact information is primarily via contact form; no explicit email or phone number found in HTML.
  5. Strong branding and professional design with consistent messaging.
  6. Use of modern CMS TYPO3 and integration of analytics and marketing tools.
  7. Security posture is good but could be improved with explicit security policies and headers.
  8. WHOIS data is minimal but not suspicious.
Technical notes

Notes

The website is built on TYPO3 CMS, a robust and widely used content management system, indicating a mature technical infrastructure. Integration of Google Tag Manager, Google Maps API, Hotjar, and Cookiebot reflects a modern approach to analytics, user experience, and privacy compliance. Hosting is managed via kasserver.com, a known hosting provider. The site demonstrates good mobile optimization and accessibility features. Performance is moderate, likely due to rich media content and external scripts. There is an opportunity to optimize loading speed and implement additional security headers to reduce technical risks. Overall, the technical stack supports the business goals effectively with room for incremental improvements.
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

Reviews of this site

Share your experience with isotec.de. Every review is verified by email and published after moderation.

Overall rating
Select a rating
4000 characters remaining

We’ll email you to confirm your review and keep your details private.

Community rating

No published reviews yet. Be the first to review isotec.de.

Feedback on this report

Rate this report, add an optional comment, and tell us if you want a security specialist to follow up.

Overall report quality
Select a rating
2000 characters remaining

We only use your feedback to improve Guard reports. Contact details are never shared.