Skip to main content

Security report for hennigsdorf.de

Stadt Hennigsdorf · Education · Germany

Medium risk. 3 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

75/100

Risk levelMedium

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

The website represents the Musikschule Hennigsdorf, a municipal music school serving children, youth, and adults in the city of Hennigsdorf, Germany. It is positioned as the second largest music school in the Oberhavel district, offering a wide range of musical education services including early childhood music education, instrumental and vocal lessons, and ensemble participation. The site targets local residents interested in music education and cultural engagement. The business model is public and community-focused, operated under the city administration. Technically, the site uses a mature but somewhat dated technology stack centered around jQuery and various UI libraries, hosted on an IKISS CMS platform. The site is well-structured with good accessibility and mobile optimization, though some modernization opportunities exist. SEO and metadata are well implemented, supporting good discoverability. From a security perspective, the site uses HTTPS (implied by domain and no warnings), has a cookie consent mechanism, and no visible vulnerabilities or exposed sensitive data. However, it lacks explicit security headers and incident response information, and uses an older jQuery version which could pose risks. Privacy compliance is strong with a clear privacy policy and cookie banner, aligned with GDPR requirements. Overall, the site is trustworthy and professional, with no signs of malicious content or blocking mechanisms. Recommendations include updating libraries, enhancing security headers, and adding security policy disclosures to improve the security posture and compliance transparency.

Scanned

NIS2 and GDPR posture

GDPR outside view
68/ 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. 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. 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 hennigsdorf.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. See sample alerts.

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
77
Security headers
65
Email security
70
DNS health
70
Network security
100
GDPR outside view
68
Average
75

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 hennigsdorf.de, from OffSeq Breach.

No leaked records found

Breach holds no records for hennigsdorf.de right now. New leaks arrive continuously, so monitoring on Breach alerts you if that changes.

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

Musikschule Hennigsdorf operates as a municipal educational institution under Stadt Hennigsdorf, focusing on music education for a broad demographic. Its competitive advantage lies in its size and integration with local schools and kindergartens, enabling broad cultural participation. Revenue streams are likely public funding and tuition fees. The target customers are local families and individuals interested in music education. Growth indicators include the introduction of a dedicated music school app and a large student base. The partnership ecosystem includes local schools and cultural institutions. The website reflects a stable, community-oriented operation with a clear mission to provide accessible musical education.

Security posture

The website demonstrates a moderate security maturity level. It employs HTTPS and cookie consent mechanisms, indicating awareness of privacy and security best practices. However, the absence of security headers such as Content Security Policy, HSTS, and X-Frame-Options reduces its defense-in-depth. The use of an outdated jQuery version could expose the site to known vulnerabilities if exploited. No incident response or security contact information is provided, which limits transparency and readiness. There is no evidence of vulnerability disclosure or security certifications. Overall, the site is secure enough for its public informational purpose but could benefit from enhancements to meet higher security standards and compliance requirements.

Recommendations

  1. Upgrade jQuery and other JavaScript libraries to current versions to mitigate known vulnerabilities.
  2. Implement HTTP security headers including Content Security Policy, HSTS, X-Frame-Options, and X-Content-Type-Options.
  3. Publish a security policy and provide incident response contact information to improve transparency and readiness.
  4. Conduct regular security audits and penetration testing to identify and remediate potential vulnerabilities.
  5. Enhance SSL/TLS configuration to ensure strong encryption and forward secrecy.

Contact details published on the site

Addresses
Legal name
Stadt Hennigsdorf
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Stadt Hennigsdorf
Description
Kommunale Musikschule der Stadt Hennigsdorf, Bildungseinrichtung für Kinder, Jugendliche und Erwachsene mit Schwerpunkt Musikerziehung, Musikpflege, Kunst und Kultur. Zweitgrößte Musikschule im Landkreis Oberhavel mit ca. 1.300 Schülern und 40 Lehrkräften.
Key services
Musikalische Früherziehung, Instrumentalunterricht, Gesangsunterricht, Orchester & Ensembles, Musikschul-App
Content quality
good
Branding
consistent

Technology

Stack
jQuery 1.12.4, jQuery UI 1.12.1, Mustache.js, Magnific Popup, PhotoSwipe, FlexSlider, SlickNav
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
70/100
Good practices seen
  • Cookie consent mechanism implemented
  • No exposed sensitive data in HTML

Analytics and tracking

Tracking level
minimal
Privacy practices
good

Advertising

Transparency
poor

Site quality

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

Key observations

  1. Website is a municipal music school site with comprehensive content.
  2. Cookie consent and privacy policy are implemented properly.
  3. No visible security policy or incident response info.
  4. No terms of service found.
  5. No analytics or tracking scripts detected.
  6. Good accessibility and mobile optimization.
  7. No suspicious or malicious content detected.
  8. WHOIS data is minimal but consistent with municipal domain management.
Technical notes

Notes

The website is built on the IKISS CMS platform and uses a combination of jQuery 1.12.4, jQuery UI, Mustache.js, Magnific Popup, PhotoSwipe, FlexSlider, and SlickNav for UI and interactivity. The HTML is well-structured with proper meta tags including Open Graph and Twitter cards, supporting SEO and social sharing. The site includes accessibility features such as ARIA labels and keyboard navigation support. Performance is moderate, with some room for optimization. Mobile responsiveness is good, supported by responsive CSS and navigation. The site uses a cookie consent banner with JavaScript to manage user preferences. No modern JavaScript frameworks or advanced backend technologies are detected. Overall, the technical implementation is solid but could benefit from modernization and security hardening.
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

Reviews of this site

Share your experience with hennigsdorf.de. Every review is verified by email and published after moderation.

Overall rating
Select a rating
4000 characters remaining

We’ll email you to confirm your review and keep your details private.

Community rating

No published reviews yet. Be the first to review hennigsdorf.de.

Feedback on this report

Rate this report, add an optional comment, and tell us if you want a security specialist to follow up.

Overall report quality
Select a rating
2000 characters remaining

We only use your feedback to improve Guard reports. Contact details are never shared.