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Security report for knapp.de

Andreas Knapp · Real Estate · Germany

High risk. 9 critical or high findings in GDPR outside view, Security headers and 2 other checks.

Security score

40/100

Risk levelHigh

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

The website knapp.de represents Andreas Knapp, a publicly appointed and sworn expert specializing in real estate valuation and related expert services in Germany. The business operates in a niche market providing property valuation, expert reports, and legal valuation services primarily targeting clients requiring official property assessments. The website content is minimal and primarily informational, focusing on the expert's credentials and service offerings without extensive interactive features or modern web design elements. Technically, the website is outdated, employing legacy technologies such as jQuery 1.7.1 and a frameset layout, which negatively impacts user experience, SEO, and accessibility. Performance is poor with a high load time and large page size. Critically, the site lacks a valid SSL certificate and does not support HTTPS, exposing visitors to security risks. No modern security headers or compliance mechanisms such as privacy or cookie policies are present, indicating a low level of digital maturity and GDPR compliance. From a security perspective, the absence of HTTPS and security headers, combined with no evidence of incident response or vulnerability disclosure policies, presents significant risks. The domain registration data aligns with the business claims, showing consistent and legitimate ownership without privacy protection. However, the lack of security best practices and compliance documentation suggests the need for urgent improvements to protect user data and enhance trust. Overall, the website scores low on security and privacy compliance, with basic content quality and business credibility. Strategic recommendations include immediate SSL implementation, updating the technology stack, adding privacy and cookie policies, and improving security headers and compliance frameworks to align with modern standards.

Scanned

NIS2 and GDPR posture

GDPR outside view
15/ 100 · Critical
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

9 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

      EU business without adequate privacy measures

      EU businesses are subject to strict GDPR requirements

      What to do: Implement comprehensive GDPR compliance including privacy policy, cookie consent, and data protection measures

    • High

      No Privacy Policy found

      GDPR requires a clear and accessible privacy policy

      What to do: Add a comprehensive privacy policy page and link to it prominently

  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 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';…

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

Keep watching knapp.de

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.

Billed monthly to your card. Cancel anytime. The full timeline opens with your unlock code.

Full report

€39.90one-time

  • The complete analysis as a PDF you can cite
  • Email delivery with an unlock code
  • Lifetime access to this report

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
75
Security headers
15
Email security
50
DNS health
65
Network security
20
GDPR outside view
15
Average
40

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

Knapp.de operates as a small professional service provider in the real estate valuation sector in Germany. The business model centers on expert property valuation and legal expert witness services, targeting clients needing official and court-recognized property assessments. The market position is niche, with a focus on quality and official credentials rather than volume or broad marketing. Revenue streams likely derive from expert reports and consulting fees. The website does not indicate partnerships or subsidiaries, and no digital marketing or analytics tools are employed, suggesting a traditional business approach. Growth indicators are not evident from the website, and the online presence is minimal, indicating potential for digital expansion. The lack of modern web technologies and compliance features may limit competitive advantage in a digitally evolving market.

Security posture

The security posture of knapp.de is weak. The site lacks a valid SSL certificate and does not support any TLS protocols, resulting in unencrypted HTTP traffic. No security headers such as HSTS or Content-Security-Policy are implemented, and DNS security features like DNSSEC and CAA records are absent. There is no evidence of vulnerability disclosure or incident response policies, and no contact channels for security issues are provided. These gaps expose the site and its users to risks including data interception, man-in-the-middle attacks, and lack of accountability in case of security incidents. Compliance with GDPR is questionable due to missing privacy and cookie policies. The overall security score is low, and urgent remediation is recommended to protect business operations and client data.

Recommendations

  1. Implement a valid SSL/TLS certificate and enforce HTTPS site-wide immediately.
  2. Update the website technology stack to modern standards, replacing framesets and outdated libraries.
  3. Publish comprehensive privacy and cookie policies to comply with GDPR and inform users.
  4. Add security headers such as HSTS, Content-Security-Policy, and X-Frame-Options to enhance security.
  5. Establish and publish an incident response and vulnerability disclosure policy with clear contact channels.
Technical notes

Notes

The website is built using legacy web technologies including jQuery 1.7.1 and a frameset HTML structure, which is deprecated and negatively impacts SEO, accessibility, and user experience. The site loads slowly with a large page size and many resources, indicating potential inefficiencies. No CMS or modern frameworks are detected. Hosting provider details are not available from the data. The absence of HTTPS and modern TLS protocols is a critical technical deficiency. No analytics or tracking technologies are present, suggesting minimal digital marketing integration. The site would benefit from modernization including responsive design, performance optimization, and enhanced security configurations.
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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