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Security report for 4sellers.de

4SELLERS · E-commerce · Germany

Medium risk. 3 critical or high findings in Security headers and SSL/TLS.

Security score

69/100

Risk levelMedium

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

4SELLERS is a German-based company specializing in innovative ERP software solutions tailored for e-commerce businesses. Their platform aims to optimize trading processes and enhance online sales success, positioning them as a significant player in the e-commerce software sector. The website is professionally designed, leveraging HubSpot CMS and integrating modern analytics and cookie consent tools, reflecting a mature digital infrastructure. Security measures such as HTTPS and security headers are properly implemented, indicating a solid security posture. However, the absence of explicit privacy policies, terms of service, and contact information represents gaps in compliance and user trust facilitation. Overall, the site is accessible and trustworthy but would benefit from enhanced transparency and compliance documentation.

Scanned

NIS2 and GDPR posture

GDPR outside view
83/ 100 · Low
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 X-Frame-Options header

      Prevents clickjacking attacks

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

  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.

    • 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
    • High

      Weak SSL Key Length

      SSL certificate uses 256-bit key, which is considered weak

      What to do: Use at least 2048-bit RSA or 256-bit ECC key

      • CWE-326
      • OWASP A04:2025
      • Mozilla TLS: Mozilla Server Side TLS 6.0 intermediate: rsa_key_size 2048

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

Keep watching 4sellers.de

This scan found 25 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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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
52
Security headers
45
Email security
70
DNS health
65
Network security
100
GDPR outside view
83
Average
69

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 4sellers.de, from OffSeq Breach.

Total records
53
Employees
6
Customers
10
Third parties
37
Weak passwords
6%

Latest record dated 2026-04-30 · 6 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 4sellers.de.

Select it in the checkout above.

Masked preview

  • –my.4sellers.de2026-04-30
  • –my.4sellers.de2025-12-05
  • –my.4sellers.de2025-11-30
  • –helpdesk.4sellers.de2025-11-26
  • –helpdesk.4sellers.de2025-11-04

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

4SELLERS targets e-commerce businesses seeking ERP solutions to streamline operations and boost online sales. Their business model is B2B software provision, focusing on the German market as indicated by the .de domain and German language content. The company leverages HubSpot for content management and marketing automation, integrating Google Analytics 4 and Cookiebot for analytics and consent management. While the site lacks detailed company registration or contact data, the professional presentation and technology stack suggest a medium-sized enterprise with a focus on digital marketing and customer engagement. No partnerships or subsidiaries are explicitly identified, and no affiliate or advertising networks beyond analytics are detected.

Security posture

The website demonstrates a good security posture with enforced HTTPS, presence of key security headers, and no visible exposure of sensitive data. Cookie consent is managed via Cookiebot, supporting GDPR compliance efforts. However, the lack of a published privacy policy, terms of service, and incident response contacts limits transparency and may pose compliance risks under GDPR and related regulations. No known vulnerabilities or outdated libraries are detected in the provided content. The site would benefit from publishing a security policy and vulnerability disclosure mechanism to enhance trust and readiness for incident management.

Recommendations

  1. Publish a comprehensive privacy policy and terms of service accessible from the website footer or main navigation.
  2. Add clear contact information including email and phone numbers for sales, support, and security incidents.
  3. Implement and publish a security policy and incident response contact details to improve compliance and trust.
  4. Consider adding a vulnerability disclosure policy or security.txt file to facilitate responsible reporting.
  5. Enhance accessibility features to improve compliance with accessibility standards and broaden user reach.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
4SELLERS
Description
Innovative ERP-Software für erfolgreichen E-Commerce. Optimieren Sie Ihre Handelsprozesse und steigern Sie Ihren Online-Erfolg – alles aus einer Hand.
Key services
ERP software, E-commerce process optimization, Online sales support
Content quality
good
Branding
consistent

Technology

Stack
HubSpot CMS, Google Analytics 4, Cookiebot, Slick Slider, CSS3, HTML5, JavaScript
Frameworks
HubSpot CMS
Platforms
HubSpot
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Cookie consent mechanism implemented
  • No exposed sensitive data found in HTML

Analytics and tracking

Services
Google Analytics 4, Leadfeeder
Tracking level
moderate
Privacy practices
basic

Advertising

Tracking pixels
Google Analytics 4, Leadfeeder
Marketing tools
HubSpot Marketing, Cookiebot
Transparency
basic

Site quality

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

Key observations

  1. Website is fully accessible with no blocking or WAF challenges.
  2. Content is professional and focused on ERP software for e-commerce.
  3. No explicit privacy policy or terms of service pages found.
  4. Cookie consent is implemented via Cookiebot.
  5. No direct contact information or forms found in the analyzed content.
  6. Uses HubSpot CMS and integrates Google Analytics 4.
  7. Security headers and HTTPS are properly configured.
  8. No suspicious or malicious content detected.
Technical notes

Notes

The website is built on HubSpot CMS, utilizing modern web technologies including CSS3, HTML5, and JavaScript libraries such as Slick Slider. It integrates Google Analytics 4 for user behavior tracking and Cookiebot for cookie consent management, reflecting adherence to privacy regulations. Hosting appears to be managed via German-based name servers, possibly HubSpot or associated providers. The site is mobile optimized with responsive design and includes SEO best practices such as meta tags and Open Graph data. Performance is moderate, with asynchronous loading of CSS and scripts. No critical technical debt or deprecated technologies are evident, but the site could improve accessibility and provide more comprehensive compliance documentation.
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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