HausExperte24.de is a small, regionally focused professional service provider specializing in certified real estate valuation, mold inspection, and building biology consulting in northern and central Germany. The company is led by a highly certified expert, Hartmut Häusler, and operates from two offices with comprehensive contact options. The website is well-structured, professionally designed, and provides clear service descriptions and trust signals such as certifications and memberships. Technically, the site uses a cm4all CMS platform with older JavaScript libraries but maintains good performance and mobile optimization. Security posture is solid with HTTPS and cookie consent mechanisms, though additional security headers and a vulnerability disclosure policy could enhance trust. Overall, the site is trustworthy, GDPR compliant, and suitable for its target audience.
Scanned ·
NIS2 and GDPR posture
GDPR outside view
83/ 100 · Low
Checks completed
7of 7
NIS2 Art. 21(2)
a(a) Risk analysis and security policies: Not visible from outside
b(b) Incident handling: One indicator
c(c) Business continuity, backups and crisis management: Not visible from outside
d(d) Supply chain security: Not visible from outside
e(e) Secure acquisition, development and maintenance, including vulnerability handling: Partly checked
f(f) Assessing the effectiveness of security measures: Not visible from outside
g(g) Cyber hygiene and security training: Not visible from outside
h(h) Cryptography and encryption: Partly checked
i(i) HR security, access control and asset management: One indicator
j(j) Multi-factor authentication and secured communications: Not visible from outside
Partly checked
One indicator
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.
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"
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.
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.
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
100
Security headers
20
Email security
65
DNS health
70
Network security
20
GDPR outside view
83
Average
60
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
Breach exposure
Leaked credentials and lookalike domains from OffSeq Breach. The counts are free; the detailed lists are paid add-ons.
Dark web exposure
Add-on
Leaked records that mention hausexperte24.de, from OffSeq Breach.
No leaked records found
Breach holds no records for hausexperte24.de right now. New leaks arrive continuously, so monitoring on Breach alerts you if that changes.
Business context, site observations and technical notes gathered during the scan, and the standards behind each reference.
Business context
Business profile
The business targets property buyers and sellers in northern Germany, offering expert valuation and consulting services backed by multiple certifications. Its competitive advantage lies in DEKRA and other recognized certifications, regional presence, and a focus on quality and compliance. Revenue likely derives from professional appraisal services, consulting, and related assessments. The company maintains partnerships with related service providers and certification bodies, enhancing its ecosystem. Growth potential exists in expanding digital presence and adding incident response and security transparency. The business model is service-oriented with a strong emphasis on trust and expertise.
Security posture
The website demonstrates a mature security posture with enforced HTTPS, cookie consent, and no visible sensitive data exposure. However, it lacks explicit security policies, incident response contacts, and security.txt files. The use of older JavaScript libraries could pose risks if not regularly updated. Security headers like X-Frame-Options and CSP are not detected, representing an area for improvement. No vulnerabilities or malware indicators were found. Overall, the site is secure for its business scope but could benefit from enhanced security transparency and modern best practices.
Recommendations
Add and enforce security headers such as X-Frame-Options, X-Content-Type-Options, and Content Security Policy.
Implement a publicly accessible security.txt file to facilitate vulnerability disclosure.
Regularly update JavaScript libraries to mitigate potential vulnerabilities.
Publish a formal security policy and incident response contact information to improve transparency.
Enhance accessibility features to improve compliance and user experience.
Automated reading of the public site. Ratings are indicative.
Business
Company
HausExperte24.de
Description
HausExperte24.de offers DEKRA-certified expertise in real estate valuation, mold inspection reports, and building biology consulting across northern Germany including Niedersachsen, Sachsen-Anhalt, Berlin, Brandenburg, Mecklenburg-Vorpommern, and Schleswig-Holstein.
Website is fully accessible with no blocking or WAF challenges.
Content is professionally presented in German language targeting northern and central Germany.
Multiple certifications and memberships enhance trust.
Contact information is comprehensive and includes multiple offices.
Cookie consent and privacy policy are implemented and GDPR compliant.
No social media links explicitly found in the HTML content.
Technical stack is somewhat dated (jQuery 1.7, Prototype.js) but functional.
No advanced analytics or tracking services detected.
No explicit security.txt or vulnerability disclosure found.
No incident response or security policy information publicly available.
Technical notes
Notes
The website runs on the cm4all CMS platform hosted by Strato, using legacy JavaScript libraries like jQuery 1.7 and Prototype.js 1.7.3, which may require modernization. The site includes standard SEO meta tags and Open Graph data, with good mobile responsiveness and basic accessibility features. Performance is moderate, with room for optimization. The cookie consent mechanism is integrated and functional. External resources are loaded from trusted domains. No advanced analytics or tracking services are detected, indicating a privacy-conscious approach. Overall, the technical infrastructure supports the business needs but could benefit from modernization and enhanced security controls.
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.
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