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Is gosau-heizung.de a Scam? Security Check Results - Gosau GbR

gosau-heizung.de Security Report Summary

gosau-heizung.de received a security score of 43 out of 100 in Guard's comprehensive security analysis, classified as "Elevated Risk". This report covers Gosau GbR's website security posture. Gosau GbR operates in the Energy industry in Germany.

Gosau GbR is a small, specialized master craftsman company based in Oelixdorf, Germany, focusing on heating, ventilation, and sanitary services. The company offers a broad range of modern heating solutions including oil, gas, pellet, biomass, heat pumps, and solar energy systems, complemented by maintenance and customer service. Their market position is that of a trusted local provider emphasizing quality and customer care, supported by certifications such as a Stiftung Warentest award. Technically, the website is built on a modern stack using jQuery, Foundation framework, and various UI libraries, with good mobile optimization and SEO practices. Security posture is moderate with cookie consent implemented but lacking visible advanced security headers. Overall, the site is professional, trustworthy, and compliant with GDPR, with clear contact information and social media presence. No critical security issues or content safety concerns were detected.

The security scan identified 37 findings across security headers, SSL/TLS, DNS health, email security, GDPR compliance, and NIS2 compliance analysis modules.

Technologies detected: jQuery 3.6.3, jQuery UI 1.13.2, Foundation CSS framework, Fresco lightbox, TwentyTwenty image comparison, AOS (Animate On Scroll), FontAwesome, Material Icons.

About this security scan

Guard performs automated security assessments of websites by analyzing SSL/TLS certificates, HTTP security headers, DNS configuration, email authentication protocols (SPF, DKIM, DMARC), GDPR compliance indicators, NIS2 directive compliance, network exposure, and AI-powered business intelligence. Each report provides domain-specific findings, risk scores, and actionable recommendations.

G

Is gosau-heizung.de Safe? Security Analysis for Gosau GbR

https://gosau-heizung.de

Check if gosau-heizung.de is a scam or legitimate. Free security scan and reviews.

EnergyGermanysmall
jQuery 3.6.3jQuery UI 1.13.2Foundation CSS frameworkFresco lightboxTwentyTwenty image comparison+3 more
Analyzed 10/31/2025Completed 3:06:04 PM4mo ago
43
Security Score
HIGH RISK

10,000+

Domains scanned

500+

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SEQ SIA

Lastadijas 12 k-3, Riga, Latvia, LV-1050

Reg. No. 40203410806 • VAT LV40203410806

Support: guard@offseq.com+371 2256 5353

AI Summary

Gosau GbR is a small, specialized master craftsman company based in Oelixdorf, Germany, focusing on heating, ventilation, and sanitary services. The company offers a broad range of modern heating solutions including oil, gas, pellet, biomass, heat pumps, and solar energy systems, complemented by maintenance and customer service. Their market position is that of a trusted local provider emphasizing quality and customer care, supported by certifications such as a Stiftung Warentest award. Technically, the website is built on a modern stack using jQuery, Foundation framework, and various UI libraries, with good mobile optimization and SEO practices. Security posture is moderate with cookie consent implemented but lacking visible advanced security headers. Overall, the site is professional, trustworthy, and compliant with GDPR, with clear contact information and social media presence. No critical security issues or content safety concerns were detected.

Detected Technologies

jQuery 3.6.3jQuery UI 1.13.2Foundation CSS frameworkFresco lightboxTwentyTwenty image comparisonAOS (Animate On Scroll)FontAwesomeMaterial Icons

12 urgent findings need attention

1 critical · 11 high

  • + 4 more findings in the full report below
Continuous monitoring

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Guard tracks your live infrastructure daily: certificate expiry, DNS & mail authentication drift, uptime changes, subdomain inventory, and unexpected tracker or content shifts. A full timeline captures every diff so you can prove remediation and spot regressions instantly.

Security drift alerts

Risk score drops, new high-severity issues, and header hardening gaps

Compliance watch

GDPR / NIS2 posture changes with governance evidence snapshots

Infrastructure surface

Unexpected open services, SSL expiry, DNS & email authentication changes

Content & tracker intelligence

Marketing tech shifts, analytics drift, and AI recommendation updates

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Security Headers

8 findings

15/100

GDPR Compliance

4 findings

40/100

NIS2 Compliance

8 findings

17/100

Email Security

6 findings

55/100

🧠AI Business Intelligence

Technology stack, business insights, and market analysis powered by AI.

Business Intelligence

Market & Strategic Analysis

The company operates in the energy sector, targeting residential and commercial customers seeking heating and sanitary solutions. Their business model is service-oriented, focusing on installation, modernization, and maintenance of heating systems. The presence of partner logos and social media channels indicates active engagement and trust-building. The company leverages certifications and awards to differentiate itself in a competitive local market. Growth potential is supported by offering renewable energy solutions such as solar and heat pumps. The website content and structure support clear communication of services and company values.

Extracted Contact Information

Marketing Intelligence Data

Security Posture Analysis

Comprehensive Security Assessment

The website demonstrates a basic to moderate security maturity level. It employs HTTPS (assumed but not explicitly confirmed), cookie consent mechanisms, and secure login forms. However, the absence of explicit security headers like CSP, HSTS, and X-Frame-Options reduces the overall security posture. No incident response or security policy pages are present, which could be improved to enhance transparency and readiness. No vulnerabilities or exposed sensitive data were detected in the provided content. The site would benefit from implementing additional security best practices and regular audits.

Strategic Recommendations

Priority Actions for Security Improvement

1

Implement comprehensive security headers including Content-Security-Policy, Strict-Transport-Security, X-Frame-Options, and X-Content-Type-Options.

Observations

AI-powered comprehensive website and business analysis.

AI-Enhanced Website Analysis

Business Insights

Company:

Gosau GbR

Description:

Gosau GbR is a master craftsman company specializing in heating and sanitary services, offering modern heating solutions including gas, oil, pellet, biomass, heat pumps, ventilation, solar energy, and related maintenance and customer service in 25524 Oelixdorf, Germany.

Key Services:
ÖlheizungGasheizungWärmepumpenLüftungWartungSanitärKundendienstSolar
Content Quality:

good

Branding:

consistent

Technical Stack

Technologies:
jQuery 3.6.3jQuery UI 1.13.2Foundation CSS frameworkFresco lightboxTwentyTwenty image comparisonAOS (Animate On Scroll)FontAwesomeMaterial Icons
Frameworks:
Foundation
Performance:

moderate

Mobile:

good

Accessibility:

basic

SEO:

good

Security Assessment

Security Score:
60/100
Best Practices:
  • Cookie consent mechanism implemented
  • No exposed sensitive data in HTML
  • Secure login form present

Analytics & Tracking

Tracking Level:minimal
Privacy Compliance:good

Advertising & Marketing

Transparency Level:poor

Website Quality Assessment

Design Quality:good
User Experience:good
Content Relevance:good
Navigation Clarity:good
Professionalism:good
Trustworthiness:high

Key Observations

1

Website is fully accessible with no blocking or WAF challenges.

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🛡️Security Headers

HTTP security headers analysis and recommendations.

Security Headers

HTTP security headers analysis

15/100
Score

Missing Strict-Transport-Security header

HIGH

Forces HTTPS connections

Missing X-Frame-Options header

HIGH

Prevents clickjacking attacks

Missing X-Content-Type-Options header

MEDIUM

Prevents MIME type sniffing

Missing Content-Security-Policy header

HIGH

Controls resources the browser is allowed to load

Missing X-XSS-Protection header

MEDIUM

Legacy XSS protection (deprecated but still recommended)

Missing Referrer-Policy header

LOW

Controls referrer information sent with requests

Missing Permissions-Policy header

MEDIUM

Controls browser features and APIs

Sensitive data may be cached

LOW

Cache-Control header should include "no-store" for sensitive pages

👤GDPR Compliance

Privacy and data protection assessment under GDPR regulations.

GDPR Compliance

Privacy and data protection assessment

40/100
Score

No Cookie Policy found

HIGH

GDPR requires clear information about cookie usage

No Cookie Consent Banner found

HIGH

GDPR requires explicit consent for non-essential cookies

No Data Protection Officer mentioned

LOW

Large organizations may need to designate a DPO under GDPR

EU business without adequate privacy measures

CRITICAL

EU businesses are subject to strict GDPR requirements

GDPR Compliance Analysis

Privacy Policy85% confidence
Cookie Policy0% confidence
Contact Information Found90% confidence
emailphone

🛡️NIS2 Compliance

Network & Information Security Directive compliance assessment.

NIS2 Compliance

Network & Information Security Directive

17/100
Score

No information security framework found

HIGH

NIS2 requires documented cybersecurity and information security measures

No vulnerability disclosure policy

MEDIUM

NIS2 encourages coordinated vulnerability disclosure

No security policy documentation found

HIGH

NIS2 requires documented cybersecurity governance and risk management

No incident response procedures found

HIGH

NIS2 requires documented incident response and business continuity plans

No business continuity planning found

MEDIUM

NIS2 emphasizes operational resilience and business continuity

No security contact information

HIGH

NIS2 requires clear incident reporting channels

No vulnerability reporting mechanism

MEDIUM

Clear vulnerability reporting supports coordinated disclosure

No NIS2 reference found

LOW

Consider explicitly mentioning NIS2 compliance efforts

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📧Email Security

SPF, DKIM, and DMARC validation and email security assessment.

Email Security

SPF, DKIM, and DMARC validation

55/100
Score

DMARC not enforcing

MEDIUM

DMARC policy is set to "none"

No DMARC reporting

LOW

DMARC aggregate reports not configured

No DKIM record found

MEDIUM

DKIM adds cryptographic signatures to emails

No BIMI Record

LOW

BIMI displays brand logos in email clients

No MTA-STS Policy

MEDIUM

MTA-STS enforces TLS for email delivery

No TLS-RPT Record

LOW

TLS-RPT provides reporting for email TLS issues

SPF
Sender Policy Framework
DKIM
DomainKeys Identified Mail
DMARC
Domain-based Message Authentication
MX Records
Mail Exchange Records
BIMI
Brand Indicators
MTA-STS
Mail Transfer Agent Security
TLS-RPT
TLS Reporting
DNSSEC
DNS Security
SPF Details
Record:
v=spf1 include:_smtp.udag.de ~all
DNS Lookups:1/10
Policy:~all
DMARC Details
Policy:none

🏆SSL/TLS Security

Certificate validity and encryption analysis.

SSL/TLS Security

Certificate validity and encryption analysis

57/100
Score

Weak Protocols Supported

HIGH

Server supports weak protocols: TLSv1.1

OCSP Stapling Not Enabled

LOW

OCSP stapling improves performance and privacy

Certificate Transparency Not Implemented

LOW

Certificate is not logged in Certificate Transparency logs

SSL Certificate Expires Within 90 Days

MEDIUM

SSL certificate expires in 88 days

HSTS Not Enabled

MEDIUM

HTTP Strict Transport Security (HSTS) is not configured

Protocol Support

TLSv1.3TLSv1.2TLSv1.1

OCSP Status

OCSP Stapling Disabled

📊DNS Health

DNS configuration and security assessment.

DNS Health

DNS configuration and security assessment

65/100
Score

DNSSEC Not Enabled

MEDIUM

DNSSEC is not configured for this domain

CAA Records Not Configured

LOW

Certificate Authority Authorization (CAA) records not found

Domain Transfer Lock Not Enabled

MEDIUM

Domain can be transferred without authorization

Domain Delete Lock Not Enabled

LOW

Domain can be deleted without additional verification

DMARC Policy Set to None

LOW

DMARC is configured but not enforcing any policy

Domain Registration Details

Protection Level
none
Suspicious Indicators Detected
  • No domain protection locks enabled

DNS Records

A Records:109.230.253.66
Name Servers:
ns.udag.de
ns.udag.net
ns.udag.org
MX Records:
10: mx00.udag.de
20: mx01.udag.de
SOA:Serial: 2024013110, TTL: 3600s

DNSSEC Status

DNSSEC Enabled(Algorithm: 13)

DNS Performance

Resolution Time:45ms

SPF Analysis

SPF Record:
v=spf1 include:_smtp.udag.de ~all

Network Security

Port scanning and network exposure analysis.

Network Security

Port scanning and network exposure analysis

20/100
Score

High-Risk Service Exposed: FTP

HIGH

Port 21 (FTP) is publicly accessible - FTP - Often unencrypted file transfer

How does gosau-heizung.de compare?

gosau-heizung.de scores below average. Browse similar domains to see how competitors handle security.

🔧Technical Analysis

Detailed technical findings and analysis from AI assessment.

Technical Analysis

Comprehensive security assessment findings

Additional Findings

The website uses a combination of jQuery, Foundation CSS framework, and several UI enhancement libraries such as Fresco and AOS for animations. The CMS appears to be a proprietary or specialized platform (Websites4Handwerker.de) tailored for craftsmen businesses. Performance is moderate with good mobile responsiveness and SEO meta tags. The site lacks advanced analytics or tracking scripts, indicating a privacy-conscious approach. Technical debt appears low, but security enhancements and accessibility improvements are recommended to modernize the infrastructure and reduce risk.
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Marketing Intelligence

Contact emails, phone numbers & warm leads

49.90 €one-time • Incl. 21% VAT

Plan Comparison

FeaturePDF ReportMarketing+
Full security analysis
Professional PDF export
Email delivery
Lifetime access + unlock code
Contact emails & phones
Marketing outreach data

Already purchased?

Order summary

Domaingosau-heizung.de
Access tierFull report or marketing add-on

Digital reports are delivered immediately after payment. By continuing you acknowledge the withdrawal waiver described in our Returns & Refunds policy.

VisaMastercardApple PayGoogle Pay

Secure payments processed via EveryPay. Prices in EUR; Incl. 21% VAT.

SEQ SIA

Lastadijas 12 k-3, Riga, Latvia, LV-1050

Reg. No. 40203410806 • VAT LV40203410806

Support: guard@offseq.com+371 2256 5353

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