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Security report for viessmann-partner.sk

Viessmann s.r.o. · Energy · Slovakia

Medium risk. 7 critical or high findings in GDPR outside view, Security headers and 1 other check.

Security score

60/100

Risk levelMedium

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

Viessmann s.r.o. is a well-established company specializing in heating and climate solutions, operating a partner portal targeted at business partners and installers. The website reflects a professional B2B platform with consistent branding and a clear business focus on energy and climate technologies. The technical infrastructure is based on ASP.NET WebForms with modern frontend frameworks like Foundation and jQuery, supplemented by Usercentrics for cookie consent and Google Analytics for tracking. The site is mobile optimized and provides a good user experience with clear navigation and professional design. Security posture is adequate with HTTPS and secure form handling, though explicit security headers and policies are not evident in the provided data. Privacy compliance is strong, with clear links to privacy and cookie policies and GDPR adherence. Overall, the domain registration data aligns well with the business claims, supporting legitimacy and trustworthiness.

Scanned

NIS2 and GDPR posture

GDPR outside view
25/ 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

7 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

    • 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

  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 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';…

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Keep watching viessmann-partner.sk

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
72
Security headers
30
Email security
70
DNS health
60
Network security
100
GDPR outside view
25
Average
60

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 viessmann-partner.sk, from OffSeq Breach.

Total records
51
Employees
0
Customers
51
Third parties
0
Weak passwords
41%

2 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 viessmann-partner.sk.

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Breach keeps ingesting new leaks, so these numbers can grow between scans.

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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

Viessmann s.r.o. holds a strong market position as a leading global provider of climate solutions, supported by its parent company Carrier. The business model focuses on B2B partnerships, providing specialized heating and renewable energy solutions. The portal serves as a secure access point for partners, indicating a controlled ecosystem for business operations. The company emphasizes sustainability and long-term responsibility, which aligns with its industry sector. The lack of direct contact information on the login page suggests a focus on registered users and controlled access. The use of Usercentrics and Google Analytics indicates a mature approach to marketing and compliance. No suspicious or unrelated domains are linked, reinforcing a focused partnership ecosystem.

Security posture

The website demonstrates a moderate security maturity level with HTTPS usage and secure form mechanisms including VIEWSTATE and EVENTVALIDATION tokens typical of ASP.NET WebForms. However, no explicit HTTP security headers were detected in the provided data, which could enhance protection against common web attacks. The presence of Usercentrics for cookie consent shows attention to privacy compliance. No vulnerabilities or exposed sensitive data were found in the HTML content. The absence of a published security policy or incident response contact reduces transparency in security governance. Recommendations include implementing security headers, ensuring VIEWSTATE encryption, and publishing security and incident response information to improve trust and compliance.

Recommendations

  1. Implement HTTP security headers such as Content-Security-Policy, Strict-Transport-Security, X-Frame-Options, and X-XSS-Protection.
  2. Ensure VIEWSTATE encryption and MAC validation are enabled to protect against tampering.
  3. Publish a clear security policy and incident response contact information on the website.
  4. Regularly audit and update third-party scripts to mitigate vulnerabilities.
  5. Enhance accessibility features and SEO optimization for improved user experience and discoverability.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Viessmann s.r.o.
Description
Viessmann s.r.o. is a company founded in 1917, specializing in heating technology and climate solutions. It is part of Carrier and is a leading global provider of efficient climate solutions including heating, water and air quality, and renewable energy. The company emphasizes sustainability and partnership with business partners.
Key services
Heating technology, Climate solutions, Renewable energy solutions
Content quality
good
Branding
consistent

Technology

Stack
ASP.NET WebForms, jQuery, Foundation CSS framework, Usercentrics (cookie consent), Google Analytics
Frameworks
Foundation
Platforms
Windows Server (implied by ASP.NET WebForms)
Performance
moderate
Mobile
good
Accessibility
basic
SEO
basic

Security

Observed score
70/100
Good practices seen
  • HTTPS implied by URL
  • Use of secure form postbacks with VIEWSTATE and EVENTVALIDATION tokens
  • Cookie consent mechanism implemented

Analytics and tracking

Services
Google Analytics
Tracking level
moderate
Privacy practices
good

Advertising

Marketing tools
Usercentrics cookie 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 partner login portal for Viessmann s.r.o. in Slovakia.
  2. Content is professional, consistent, and targeted at business partners.
  3. No direct contact emails or phone numbers found on login page.
  4. Cookie consent is implemented via Usercentrics.
  5. Google Analytics is used for tracking.
  6. No explicit security policy or incident response information found on this page.
  7. No security headers information available from provided data.
  8. No signs of WAF or content blocking.
  9. No adult or questionable content detected.
Technical notes

Notes

The website is built on a legacy ASP.NET WebForms platform combined with modern frontend frameworks like Foundation and jQuery. It uses Usercentrics for cookie consent management and Google Analytics for user tracking. The site is mobile responsive and has a professional design. Performance is moderate, with no explicit hosting provider identified. The use of VIEWSTATE and EVENTVALIDATION indicates standard ASP.NET security mechanisms, though additional security headers are recommended. The technical stack is stable but could benefit from modernization to improve performance, security, and maintainability.
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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