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Security report for adesso.de

adesso SE · Technology · Germany

Medium risk. 3 critical or high findings in SSL/TLS, Security headers and 1 other check.

Security score

56/100

Risk levelMedium

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

adesso SE is a leading IT service provider in the German-speaking region, specializing in IT consulting and software development to support digital transformation initiatives. The company serves a broad range of industries including automotive, banking, energy, healthcare, manufacturing, and public administration. Their business model focuses on delivering technologically advanced solutions that ensure long-term competitive advantages for their clients. The website reflects a mature digital presence with comprehensive service descriptions, client references, and active engagement through social media and events. Technically, the site employs modern web technologies such as Web Components, Piwik PRO analytics, and responsive design, ensuring good performance and accessibility. Security posture is solid with HTTPS enforcement and privacy consent mechanisms, though formal security policies and incident response contacts are not publicly disclosed. Overall, the site demonstrates high professionalism, trustworthiness, and compliance with GDPR requirements.

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

3 findings rated critical or high. Fix these first.

  1. 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

      Unable to retrieve SSL certificate

      Could not establish secure connection to retrieve certificate information

      What to do: Check if the server is accessible and SSL/TLS is properly configured

  2. 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 X-Frame-Options header

      Prevents clickjacking attacks

      What to do: Add "X-Frame-Options: DENY" or "X-Frame-Options: SAMEORIGIN"

  3. 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

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

Keep watching adesso.de

This scan found 22 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

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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
45
Email security
55
DNS health
65
Network security
100
GDPR outside view
73
Average
56

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 adesso.de, from OffSeq Breach.

Total records
351
Employees
37
Customers
164
Third parties
150
Weak passwords
8%

Latest record dated 2026-06-14 · 31 subdomains 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 adesso.de.

Select it in the checkout above.

Masked preview

  • –jira.adesso.de2026-06-14
  • –weihnachten-koeln.adesso.de2026-06-10
  • –profiler.adesso.de2026-06-08
  • –owa.adesso.de2026-06-08
  • –adfs.adesso.de2026-06-08

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

Open in Breach(opens in a new tab)Monitor on Breach(opens in a new tab)

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 as a top IT service provider with a large workforce exceeding 10,700 employees and over 65 locations. Their diversified service portfolio includes managed services, app development, data analytics, security services, and sustainable business solutions. The presence of notable client references such as BMW, Bosch, Zurich, and PLAYMOBIL® indicates strong industry trust and capability. The company actively promotes employer branding, evidenced by the Top Employer 2025 certification. Their digital ecosystem includes dedicated job portals and whistleblower systems, reflecting organizational maturity and compliance focus. The website content and structure support clear communication to business clients, emphasizing digital sovereignty and innovation.

Security posture

The website enforces HTTPS and integrates privacy consent mechanisms aligned with GDPR. Use of Piwik PRO analytics indicates a preference for privacy-conscious tracking. The contact forms appear secure with standard protections, and no sensitive data is exposed in the HTML. However, the absence of publicly available security policies, incident response contacts, and a security.txt file suggests room for improvement in transparency and vulnerability management. Security headers are not explicitly detected in the HTML content, which could be enhanced to mitigate common web threats. Overall, the security posture is good but could be strengthened by formalizing and publishing security governance documents.

Recommendations

  1. Publish a dedicated security policy page outlining security governance and controls.
  2. Provide clear incident response contact information, including security@ or abuse@ email addresses.
  3. Implement and publish a security.txt file to facilitate vulnerability disclosures.
  4. Enhance HTTP security headers such as Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security.
  5. Regularly review and audit third-party scripts and analytics tools for security and privacy compliance.

Contact details published on the site

Addresses
Legal name
adesso SE
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
adesso SE
Description
adesso sorgt als unabhängiger IT-Dienstleister durch Beratung und Softwareentwicklung für den Erfolg Ihrer Projekte und die Zukunftssicherheit Ihrer Anwendungen.
Key services
Managed Services, App Development, Data and Analytics, Digital & Customer Experience, Digital Identities, Interaction Room, IT-Management Consulting, Organizational Consulting, Security Services, SmartShore
Content quality
excellent
Branding
consistent

Technology

Stack
JavaScript, Piwik PRO Analytics, jQuery 3.6.0, Web Components, SVG, CSS3, HTML5
Frameworks
Web Components, jQuery
Platforms
Piwik PRO
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Secure contact forms with anti-CSRF tokens (implied by form structure)
  • No exposed sensitive data in HTML
  • Use of privacy consent mechanisms

Analytics and tracking

Services
Piwik PRO
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Piwik PRO
Marketing tools
Piwik PRO
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. Content is professionally presented in German with English alternate.
  3. Strong focus on IT consulting and digital transformation services.
  4. Comprehensive navigation with detailed industry and service offerings.
  5. Multiple client references and case studies presented.
  6. Active social media presence and transparent contact information.
  7. Use of modern web technologies and analytics with privacy considerations.
Technical notes

Notes

The website uses a modern tech stack including Web Components and jQuery, with Piwik PRO for analytics, indicating a focus on privacy and performance. The site is responsive and optimized for mobile devices, with good accessibility and SEO practices. Preloading of fonts and use of SVG logos contribute to performance and visual quality. The hosting provider is not explicitly identified, but the domain uses company-specific name servers, suggesting controlled infrastructure. Performance is moderate, with potential for optimization in script loading and caching. The site architecture supports clear navigation and content discoverability, enhancing user experience.
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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