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Security report for alsterbuben.de

Alsterbuben GMBH · Media · Germany

High risk. 8 critical or high findings in Network security, Security headers and 2 other checks.

Security score

49/100

Risk levelHigh

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

Alsterbuben GmbH is a German-based content and marketing agency specializing in tailored marketing strategies, content creation, and brand communication solutions. The company targets businesses and brands seeking professional marketing services, leveraging over 20 years of experience in media and marketing sectors. Their key offerings include marketing consultancy, brand strategy, content production, and digital marketing services. The website reflects a professional and consistent brand image with clear contact information and client references, positioning them as a credible small-sized agency in the German media industry. Technically, the website is built on WordPress using the Divi theme, incorporating modern plugins such as Smart Slider 3 and CookieFirst for consent management. The site is mobile-optimized with moderate performance and basic accessibility features. Security posture is adequate with HTTPS enforced and cookie consent implemented, though lacking advanced security headers and published incident response policies. Overall, the site is trustworthy, compliant with GDPR, and free from suspicious or malicious content.

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

8 findings rated critical or high. Fix these first.

  1. Network security

    Services reachable from the internet are the first thing attackers probe. Anything open that does not need to be should be closed.

    • Critical

      Critical Service Exposed: MySQL

      Port 3306 (MySQL) is publicly accessible - MySQL - Database server

      What to do: Immediately restrict access to MySQL using firewall or VPN

      • NIS2 21(2)(e)
      • IR 2024/2690 6.7.2(f): Implementing Regulation (EU) 2024/2690, Annex point 6.7.2(f): Network security
      • NIST CM-7: NIST SP 800-53 Rev. 5 CM-7: Least Functionality
      • NIST SC-7: NIST SP 800-53 Rev. 5 SC-7: Boundary Protection
    • Critical

      Critical Service Exposed: PostgreSQL

      Port 5432 (PostgreSQL) is publicly accessible - PostgreSQL - Database server

      What to do: Immediately restrict access to PostgreSQL using firewall or VPN

      • NIS2 21(2)(e)
      • IR 2024/2690 6.7.2(f): Implementing Regulation (EU) 2024/2690, Annex point 6.7.2(f): Network security
      • NIST CM-7: NIST SP 800-53 Rev. 5 CM-7: Least Functionality
      • NIST SC-7: NIST SP 800-53 Rev. 5 SC-7: Boundary Protection

  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 alsterbuben.de

This scan found 26 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
82
Security headers
15
Email security
80
DNS health
70
Network security
0
GDPR outside view
68
Average
53
After the cap
49

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 · found on this site
  • 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 alsterbuben.de, from OffSeq Breach.

No leaked records found

Breach holds no records for alsterbuben.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

Alsterbuben operates as a service agency in the media sector, focusing on content and marketing solutions for corporate clients. Their business model revolves around consultancy and creative services, including strategy development, content production, and marketing execution across digital and traditional channels. The presence of client logos and detailed service descriptions indicates a well-established market position with a focus on quality and client satisfaction. The company maintains active social media profiles on LinkedIn and Xing, supporting professional networking and business development. No parent or subsidiary companies were identified, suggesting independent operation. The agency's website content and structure support lead generation and client engagement, reflecting a mature digital presence aligned with industry standards.

Security posture

The website demonstrates a baseline security posture with HTTPS enabled and a cookie consent mechanism in place, indicating awareness of privacy regulations. However, the absence of key security headers such as Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options reduces protection against common web attacks. No vulnerability disclosure or incident response information is published, which could hinder timely reporting and mitigation of security issues. The use of third-party scripts like Google Tag Manager and CookieFirst is standard but requires regular auditing to prevent supply chain risks. Overall, the security maturity is moderate, suitable for a small agency website but with room for improvement to enhance resilience and compliance.

Recommendations

  1. Implement comprehensive security headers (CSP, X-Frame-Options, X-Content-Type-Options) to mitigate common web vulnerabilities.
  2. Publish a security.txt file and incident response contact details to facilitate vulnerability reporting and improve transparency.
  3. Conduct regular security audits of third-party scripts and plugins to identify and remediate vulnerabilities.
  4. Enhance website accessibility features to improve usability for all users and comply with accessibility standards.
  5. Develop and publish a terms of service page to clarify user rights and obligations, strengthening legal compliance.

Contact details published on the site

Addresses
Legal name
Alsterbuben GMBH
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Alsterbuben GMBH
Description
Agentur für Content und Marketing, entwickelt individuelle Content- und Marketinglösungen für Unternehmen und Marken mit Strategie, Kreativität und Herz.
Key services
Marketing & Kommunikationsberatung, Markenstrategie & CI-Entwicklung, Marketing- & Kommunikationsstrategie, Textkonzeption & -erstellung, Foto- & Videoproduktion, Kreation & Grafik, Digital Marketing, Social Media Marketing, Klassisches Marketing
Content quality
good
Branding
consistent

Technology

Stack
WordPress, Divi Theme, jQuery, Smart Slider 3, Logo Carousel Pro, Google Tag Manager, CookieFirst Consent
Frameworks
Divi
Platforms
WordPress
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
70/100
Good practices seen
  • HTTPS enforced
  • Cookie consent mechanism implemented

Analytics and tracking

Services
Google Tag Manager
Tracking level
moderate
Privacy practices
good

Advertising

Marketing tools
CookieFirst Consent
Transparency
basic

Site quality

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

Key observations

  1. Website is a professional marketing and content agency site in German language.
  2. Clear contact information including phone, email, and physical address provided.
  3. Cookie consent mechanism implemented via CookieFirst.
  4. No terms of service page found.
  5. No explicit security or incident response policies published.
  6. Use of modern WordPress CMS with Divi theme and common plugins.
  7. Client logos displayed indicating business credibility.
  8. No suspicious or malicious content detected.
  9. No adult or NSFW content present.
Technical notes

Notes

The website is built on WordPress CMS with the Divi theme, a popular and flexible framework for content management and design. It uses jQuery and several plugins including Smart Slider 3 for interactive sliders and Logo Carousel Pro for client logos. Google Tag Manager is integrated for analytics and marketing tracking, complemented by CookieFirst for GDPR-compliant cookie consent management. The site loads CSS and JavaScript resources efficiently, though performance is moderate, possibly due to multiple slider and carousel scripts. Mobile optimization is good, with responsive design elements and viewport settings. SEO is supported by proper meta tags and structured content, but accessibility could be improved. No hosting provider details were identified from the data. Overall, the technical infrastructure is modern and suitable for a small marketing agency website, with opportunities for performance tuning and security enhancements.
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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