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Security report for plusnet.de

Plusnet GmbH · Telecommunications · Germany

High risk. 5 critical or high findings in Network security and SSL/TLS.

Security score

49/100

Risk levelHigh

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

Plusnet GmbH is a leading telecommunications partner in Germany, specializing in providing modular and scalable internet, telephony, and networking solutions tailored for medium to large businesses, including municipalities. The company positions itself as a driver for the digital future, serving over 40,000 customers with a strong partner network and approximately 500 employees. Their offerings include fiber optic internet, DSL, radio links, mobile access, SIP trunks, cloud telephony, VPN, and security services compliant with KRITIS standards. The website reflects a mature digital presence built on the Neos CMS and Flow PHP framework, with modern web technologies and a focus on user experience and accessibility.

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

5 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
    • High

      High-Risk Service Exposed: FTP

      Port 21 (FTP) is publicly accessible - FTP - Often unencrypted file transfer

      What to do: Consider restricting access to FTP or implementing strong authentication

      • 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. 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

      SSL Certificate Expires Soon

      SSL certificate expires in 18 days

      What to do: Renew SSL certificate before expiration

      • NIS2 21(2)(h)
      • IR 2024/2690 9.2(c): Implementing Regulation (EU) 2024/2690, Annex point 9.2(c): Cryptography
      • NIST SC-17: NIST SP 800-53 Rev. 5 SC-17: Public Key Infrastructure Certificates

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Keep watching plusnet.de

This scan found 19 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
62
Security headers
90
Email security
85
DNS health
75
Network security
0
GDPR outside view
83
Average
66
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 plusnet.de, from OffSeq Breach.

Total records
24
Employees
0
Customers
24
Third parties
0
Weak passwords
17%

7 subdomains affected

See the 10 newest leaked credentials

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Technical appendix

Business context, site observations and technical notes gathered during the scan, and the standards behind each reference.

Business context

Business profile

Plusnet operates in the telecommunications sector targeting business customers such as medium-sized enterprises, large corporations, and public sector entities in Germany. Their business model revolves around providing integrated communication solutions with a strong emphasis on personal consultation and engineered-in-Germany quality. The company maintains a robust partner ecosystem with over 300 partners, enhancing market reach and service delivery. Their market position is solidified by certifications and compliance with critical infrastructure standards, indicating a focus on reliability and security. Revenue streams likely include service subscriptions, consulting, and managed network solutions.

Security posture

The website demonstrates a good security posture with HTTPS enforcement, CAPTCHA integration on forms, and a GDPR-compliant cookie consent mechanism. However, explicit security policies, incident response contacts, and vulnerability disclosure information are absent, which are important for transparency and trust in the telecommunications industry. No security headers were detected in the provided data, suggesting room for improvement. The absence of exposed sensitive data and use of modern frameworks reduce risk, but the company should enhance its public security documentation and incident handling readiness.

Recommendations

  1. Publish a dedicated security policy page outlining security frameworks and practices.
  2. Provide clear incident response contact information such as security@ or abuse@ email addresses.
  3. Implement and publish a vulnerability disclosure policy or security.txt file.
  4. Add standard security headers (Content-Security-Policy, X-Frame-Options, etc.) to improve protection.
  5. Regularly review and audit third-party scripts and libraries for vulnerabilities.

Contact details published on the site

Addresses
Legal name
Plusnet GmbH
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Plusnet GmbH
Description
Plusnet ist ein führender Partner in Telekommunikation & Schrittmacher für die digitale Zukunft von Mittelstand, Großkunden & Kommunen in Deutschland.
Key services
Internet (Glasfaser, DSL, Richtfunk, Mobile Access, Standleitung), Telefonie (SIP-Trunk, Cloud-Telefonanlage, ISDN), Vernetzung (SD-WAN, VPN), Security Services, LAN-Management, WLAN-Lösungen, Individual solutions and consulting
Content quality
excellent
Branding
consistent

Technology

Stack
PHP, JavaScript, Google Tag Manager, FriendlyCaptcha, CookieHub
Frameworks
Neos CMS, Flow PHP Framework
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Use of CAPTCHA (FriendlyCaptcha) on forms
  • Cookie consent banner with options to accept/deny
  • No exposed sensitive data in HTML

Analytics and tracking

Services
Google Tag Manager
Tracking level
moderate
Privacy practices
good

Advertising

Marketing tools
CookieHub
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 comprehensive and professionally presented in German.
  3. Strong focus on business telecommunications services for German market.
  4. Multiple contact methods including phone, email, and contact form.
  5. Cookie consent and privacy policy are implemented with GDPR compliance.
  6. Use of modern web technologies and frameworks (Neos CMS, Flow PHP).
  7. Security practices include HTTPS, CAPTCHA, and cookie consent but lack explicit security policy and incident response info.
  8. No suspicious or malicious content detected.
  9. No terms of service page found.
  10. WHOIS data is limited but domain appears legitimate.
Technical notes

Notes

The website is built on the Neos CMS platform using the Flow PHP framework, indicating a modern and flexible content management system. It employs JavaScript modules, Google Tag Manager for analytics, CookieHub for cookie management, and FriendlyCaptcha for bot protection. The site is mobile-optimized with responsive design and accessibility considerations. Performance is moderate, with multiple image sizes and lazy loading used. SEO is well addressed with meta tags, Open Graph, Twitter cards, and JSON-LD structured data. Hosting details are not explicit, but the domain uses a nameserver consistent with a professional hosting provider. Overall, the technical infrastructure supports a professional and secure online presence.
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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