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Security report for dreso.com

Drees & Sommer · Real Estate · Germany

Medium risk. 4 critical or high findings in GDPR outside view and SSL/TLS.

Security score

65/100

Risk levelMedium

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

Drees & Sommer is a well-established, partner-led consulting firm founded in 1970, specializing in providing holistic consulting and implementation services across Real Estate, Infrastructure, and Industry sectors. With a workforce of approximately 6,500 employees across more than 70 global locations, the company emphasizes sustainability and digital transformation as core pillars of its business. The website reflects a professional and comprehensive digital presence, leveraging TYPO3 CMS and integrating modern consent management and analytics tools to ensure compliance and user experience. Technically, the website is built on a robust CMS platform with modern JavaScript and CSS technologies, optimized for mobile devices and accessibility. The integration of Usercentrics for cookie consent and Google Tag Manager for analytics indicates a mature approach to privacy and data management. Performance is moderate, with room for optimization, but overall the site is well-structured and SEO-friendly. From a security perspective, the site enforces HTTPS and employs consent-based tracking, but lacks explicit security headers and a published vulnerability disclosure policy. No critical vulnerabilities or exposed sensitive data were detected. The WHOIS data aligns with the company's profile, reinforcing legitimacy and trustworthiness. Overall, the website demonstrates a strong business and technical foundation with good privacy and security practices, suitable for an enterprise-level consulting firm. Strategic improvements in security headers and incident response transparency would further enhance the security posture.

Scanned

NIS2 and GDPR posture

GDPR outside view
28/ 100 · High
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. GDPR outside view

    These are the privacy signals visitors and data protection authorities look for under GDPR.

    • Critical

      No HTTPS encryption

      GDPR requires appropriate security measures for personal data

      What to do: Implement SSL/TLS certificate for HTTPS

    • High

      No Cookie Policy found

      GDPR requires clear information about cookie usage

      What to do: Add a dedicated cookie policy explaining cookie usage and purposes

    • 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

  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.

    • Critical

      No HTTPS Encryption

      Website does not use HTTPS encryption, making all data transmission vulnerable to interception

      What to do: Implement SSL/TLS certificate and redirect all HTTP traffic to HTTPS

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

Keep watching dreso.com

This scan found 14 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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  • 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
0
Security headers
95
Email security
80
DNS health
85
Network security
100
GDPR outside view
28
Average
65

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 dreso.com, from OffSeq Breach.

Total records
25
Employees
2
Customers
8
Third parties
15
Weak passwords
8%

Latest record dated 2025-12-28 · 1 subdomain affected

See the 10 newest leaked credentials

A one-off add-on to this report that lists the most recent identifier and password pairs OffSeq Breach holds for dreso.com.

Select it in the checkout above.

Masked preview

  • –adfs.dreso.com2025-12-28
  • –adfs.dreso.com2025-07-19

Breach keeps ingesting new leaks, so these numbers can grow between scans.

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Technical appendix

Business context, site observations and technical notes gathered during the scan, and the standards behind each reference.

Business context

Business profile

Drees & Sommer holds a strong market position as a sustainability and digitalization pioneer in consulting for Real Estate, Infrastructure, and Industry sectors. Their business model combines consulting and implementation services, targeting large enterprises and institutional clients. The company benefits from a broad international footprint and a diversified service portfolio, including strategy, technical advisory, and project management. Their growth is supported by a consistent brand message and active engagement through social media and career portals. The absence of parent or subsidiary companies in the data suggests a focused organizational structure. The company’s emphasis on compliance and certifications adds to its competitive advantage and trustworthiness in regulated markets.

Security posture

The website exhibits a mature security posture with enforced HTTPS and a comprehensive cookie consent mechanism via Usercentrics, ensuring GDPR compliance. However, the absence of key security headers such as Content-Security-Policy and X-Frame-Options represents an area for improvement. No incident response contacts or security.txt files were found, which could hinder vulnerability reporting and response. The use of third-party scripts like Google Tag Manager and Usercentrics is managed with consent but requires ongoing monitoring for vulnerabilities. Overall, the security maturity is good but could be enhanced by adopting additional best practices and transparency measures.

Recommendations

  1. Implement standard security headers including Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security to harden the website against common attacks.
  2. Publish a security.txt file and provide explicit incident response contact information to facilitate responsible vulnerability disclosure.
  3. Conduct regular security audits of third-party scripts and dependencies to mitigate risks from external libraries.
  4. Enhance transparency around data retention policies and user privacy to strengthen GDPR compliance and user trust.
  5. Optimize website performance and loading times to improve user experience and SEO rankings.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Drees & Sommer
Description
Drees & Sommer is a partner-led consulting company founded in 1970 with 6,500 employees at more than 70 locations worldwide. They provide holistic solutions and implementation services for Real Estate, Infrastructure, and Industry sectors, focusing on sustainability and digitalization.
Key services
Consulting, Implementation, Strategy and Organization, User Centric Spaces and Places, Digital Services and Technologies, Resilience and Risk Advisory, Sustainability and Climate Solutions, Urban and Infrastructure Solutions, Real Estate Solutions, Technical Advisory
Content quality
excellent
Branding
consistent

Technology

Stack
TYPO3 CMS, Google Tag Manager, Usercentrics Consent Management, JavaScript, CSS3, HTML5
Frameworks
TYPO3 CMS
Performance
moderate
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Consent management for cookies and tracking
  • No exposed sensitive data in HTML
  • Secure forms with POST method

Analytics and tracking

Services
Google Analytics, Google Tag Manager
Tracking level
moderate
Privacy practices
good

Advertising

Ad networks
Google AdServices
Marketing tools
Usercentrics 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. Strong focus on sustainability and digital transformation in business offerings.
  3. Comprehensive cookie consent and privacy management implemented via Usercentrics.
  4. No explicit security.txt or incident response contact found.
  5. Use of modern CMS TYPO3 and integration of Google Analytics and Tag Manager.
  6. Clear navigation structure with multilingual support and country-specific sites.
  7. Social media presence on LinkedIn, YouTube, Instagram, and company blog.
  8. No exposed sensitive data or obvious security vulnerabilities detected.
Technical notes

Notes

The website is built on TYPO3 CMS, a mature and flexible content management system, indicating a stable technical foundation. The use of modern web standards (HTML5, CSS3) and responsive design ensures good accessibility and mobile optimization. Integration of Google Tag Manager and Usercentrics reflects a modern approach to analytics and privacy management. Performance is moderate, suggesting potential for optimization in asset delivery and caching. No hosting provider details were identified from the HTML content. The technical stack supports scalability and internationalization, with multiple language and country-specific versions available.
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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