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Security report for s-immo-aachen.de

Sparkassen Immobilien GmbH Aachen · Real Estate · Germany

Low risk. 2 critical or high findings in Security headers and SSL/TLS.

Security score

82/100

Risk levelLow

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

Sparkassen Immobilien GmbH Aachen operates as a leading real estate brokerage firm in the Aachen region, offering comprehensive services including property sales, rentals, valuations, energy consulting, and new development projects. The company leverages its strong regional expertise and partnerships, notably with Sparkasse Aachen for financing solutions, to maintain a dominant market position. The website reflects a mature digital presence built on WordPress with modern plugins and integrations, supporting a professional user experience and effective customer engagement. Security posture is solid with HTTPS enforcement and cookie consent mechanisms, though some security headers could be improved. The site demonstrates good privacy compliance with a comprehensive privacy policy and cookie management. Overall, the business credibility is high, supported by multiple certifications and positive customer reviews.

Scanned

NIS2 and GDPR posture

GDPR outside view
83/ 100 · Low
Checks completed
6of 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

2 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 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 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

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Keep watching s-immo-aachen.de

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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
75
Security headers
80
Email security
70
Network security
100
GDPR outside view
83
Average
82

Not counted

  • DNS health: did not complete in this scan.
  • 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

The company targets property buyers and sellers in the Aachen metropolitan area, focusing on residential and commercial real estate markets. Its business model centers on brokerage commissions, valuation services, and energy consulting, supplemented by strategic partnerships for financing and marketing. The presence of detailed market reports and customer testimonials indicates a customer-centric approach and strong brand reputation. The company has maintained operations since at least 1993, indicating stability and experience. The ecosystem includes partnerships with major real estate platforms and local financial institutions, enhancing market reach and service breadth.

Security posture

The website employs HTTPS with a valid SSL configuration, uses cookie consent banners aligned with GDPR, and integrates security features in forms such as nonce tokens. However, explicit security headers like Content-Security-Policy and X-Frame-Options are not evident, representing an area for enhancement. No critical vulnerabilities or exposed sensitive data were detected. The site lacks a published security policy or incident response contact, which could improve transparency and preparedness. Overall, the security maturity is good but could benefit from additional hardening and documentation.

Recommendations

  1. Implement comprehensive security headers including Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options.
  2. Fix media playback issues to enhance user experience and reduce potential confusion.
  3. Publish a clear security policy and incident response contact information to improve trust and compliance.
  4. Regularly audit and update WordPress core, themes, and plugins to mitigate vulnerabilities.
  5. Enhance accessibility features to improve compliance and user inclusivity.

Contact details published on the site

Addresses
Legal name
Sparkassen Immobilien GmbH
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Sparkassen Immobilien GmbH Aachen
Description
Willkommen bei der Sparkassen Immobilien GmbH. Ihr Immobilienmakler in Aachen - Ihr Partner für erfolgreiche Immobiliengeschäfte.
Key services
Immobilien kaufen, Immobilien mieten, Immobilien verkaufen, Wertanalyse, Energieberatung, Neubaugebiete, Baufinanzierung (via Sparkasse Aachen Partner)
Content quality
excellent
Branding
consistent

Technology

Stack
WordPress, Enfold Theme, Gravity Forms, Google Tag Manager, MediaElement.js, jQuery, ProvenExpert Widget, MeinImmoPortal.eu platform
Frameworks
WordPress
Platforms
WordPress CMS
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enabled
  • Cookie consent mechanism implemented
  • No exposed sensitive data in HTML
  • Use of security nonce tokens in forms (Gravity Forms)

Analytics and tracking

Services
Google Tag Manager
Tracking level
moderate
Privacy practices
good

Advertising

Marketing tools
ProvenExpert Widget
Transparency
good

Site quality

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

Key observations

  1. Website is professionally designed and content-rich.
  2. Strong regional market positioning in Aachen real estate sector.
  3. Comprehensive cookie consent and privacy policy in place.
  4. Multiple customer trust signals and certifications displayed.
  5. Use of modern WordPress CMS with popular plugins.
  6. No signs of malicious or suspicious content.
  7. Contact forms collect personal data with consent checkbox.
  8. No explicit security policy or incident response info found.
  9. Video playback issue noted on one embedded video.
  10. External links mostly to trusted partners and service providers.
Technical notes

Notes

The website is built on WordPress using the Enfold theme and several plugins including Gravity Forms for data collection and ProvenExpert for customer reviews. It integrates Google Tag Manager for analytics and tracking. Hosting appears to be managed via the MeinImmoPortal.eu platform, which provides DNS and CDN services. The site is mobile-optimized with responsive design and good SEO metadata including Open Graph and JSON-LD structured data. Performance is moderate with some lazy loading and caching mechanisms. Minor technical debt is noted in media playback errors and incomplete security header implementation.
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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