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Security report for sirius-real-estate.com

Sirius Real Estate · Real Estate · Germany

Medium risk. 5 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

70/100

Risk levelMedium

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

Sirius Real Estate operates as a leading owner and operator of business parks, offices, and industrial complexes primarily in Germany. The company provides flexible and conventional workspace solutions targeting businesses seeking commercial real estate. The website reflects a professional presence with a clear focus on real estate services, supported by a domain age consistent with an established business since 2008. Technically, the site uses modern JavaScript libraries, analytics tools such as Microsoft Application Insights and Google Tag Manager, and implements GDPR-compliant cookie consent via Usercentrics. Security posture is solid with HTTPS and security headers in place, though DNSSEC is not enabled. However, the absence of explicit privacy policy, terms of service, and contact information pages limits full compliance and user trust. Overall, the site is well-structured and professional but could improve transparency and compliance documentation.

Scanned

NIS2 and GDPR posture

GDPR outside view
73/ 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

5 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

  3. 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 sirius-real-estate.com

This scan found 21 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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Recommended

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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
82
Security headers
15
Email security
87
DNS health
65
Network security
100
GDPR outside view
73
Average
70

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

The company holds a strong market position in the German real estate sector, focusing on commercial properties such as business parks and industrial complexes. Their business model revolves around leasing and managing flexible workspace solutions for corporate clients. The website targets business customers and investors, emphasizing their leadership and experience since 2008. The use of advanced tracking and consent management tools indicates a moderate digital maturity. No direct partnerships or subsidiaries were identified from the domain or website content. The company appears to maintain a consistent brand and professional online presence, supporting credibility in their sector.

Security posture

The website demonstrates a good security maturity level with HTTPS enforced and multiple security headers configured. The use of Usercentrics for cookie consent shows attention to privacy compliance. No vulnerabilities or exposed sensitive data were detected in the provided content. However, the lack of a published security policy, incident response contacts, or vulnerability disclosure mechanisms indicates room for improvement in security governance and transparency. DNSSEC absence is a minor risk factor. Overall, the security posture is adequate for a commercial real estate website but could be enhanced by publishing formal security and incident response documentation.

Recommendations

  1. Publish a comprehensive privacy policy and terms of service pages to improve legal compliance and user trust.
  2. Add clear contact information including company emails and phone numbers for customer support and inquiries.
  3. Enable DNSSEC to enhance domain name system security.
  4. Implement and publish a security policy and incident response contact details to demonstrate security governance.
  5. Enhance accessibility features to improve usability for all users and comply with accessibility standards.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Sirius Real Estate
Description
Leading owner and operator of business parks, offices and industrial complexes in Germany, providing flexible and conventional ​workspace to companies.
Key services
business parks ownership, office space leasing, industrial complex management, flexible workspace solutions
Content quality
good
Branding
consistent

Technology

Stack
JavaScript, CSS, Google Tag Manager, Microsoft Application Insights, Usercentrics Consent Management, Tiny Slider
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
80/100
Good practices seen
  • HTTPS enforced
  • Use of security headers
  • Consent management implemented

Analytics and tracking

Services
Microsoft Application Insights, Google Tag Manager
Tracking level
moderate
Privacy practices
basic

Advertising

Tracking pixels
LinkedIn Insight, Leadinfo
Marketing tools
Microsoft Application Insights
Transparency
basic

Site quality

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

Key observations

  1. Website is professionally designed and business-focused on real estate in Germany.
  2. No explicit privacy policy or terms of service pages found in the scanned content.
  3. Cookie consent is implemented via Usercentrics, indicating GDPR awareness.
  4. No contact emails or phone numbers explicitly found in the provided HTML snippet.
  5. Use of modern analytics and tracking tools with consent management.
  6. Security headers and HTTPS are properly configured.
  7. No signs of WAF or content blocking detected.
Technical notes

Notes

The website uses a modern front-end stack with CSS and JavaScript libraries including Tiny Slider and Font Awesome. Analytics and tracking are implemented via Microsoft Application Insights and Google Tag Manager, with consent managed by Usercentrics. Hosting appears to be managed via domaincontrol.com DNS servers, likely GoDaddy infrastructure. Performance is moderate with asynchronous script loading. SEO is supported by meta tags and responsive design. No CMS or backend platform was explicitly detected. The site is mobile optimized and uses security best practices such as HTTPS and security headers. Technical debt appears low but could benefit from enhanced accessibility and formal documentation of security and privacy practices.
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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