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Security report for silesnet.pl

SilesNet Polska Sp. z o. o. · Telecommunications · Poland

Medium risk. 8 critical or high findings in GDPR outside view, Security headers and 1 other check.

Security score

63/100

Risk levelMedium

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

SilesNet Polska Sp. z o. o. is a small regional telecommunications provider based in Poland, specializing in high-quality fiber-optic and wireless internet services for residential and business customers. With over 21 years of market presence, the company emphasizes reliability, professional customer support, and tailored internet solutions. Their website reflects a professional and consistent brand image, targeting Polish-speaking customers primarily in the Cieszyn region. Technically, the website uses modern JavaScript libraries such as Swiper.js for UI elements and integrates Google Tag Manager and Google Analytics for tracking and marketing purposes. The site is mobile-optimized and provides clear navigation and contact information, though it lacks explicit privacy and terms of service pages. Security posture is moderate, with HTTPS usage and cookie consent implemented, but missing DNSSEC and security headers reduce the overall security maturity. No signs of WAF or content blocking were detected, and the domain registration data aligns well with the business claims, supporting legitimacy. Overall, the website is professional and trustworthy but could improve in privacy transparency and security best practices.

Scanned

NIS2 and GDPR posture

GDPR outside view
40/ 100 · High
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. 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

  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';…

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Keep watching silesnet.pl

This scan found 22 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
65
Security headers
20
Email security
70
DNS health
80
Network security
100
GDPR outside view
40
Average
63

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

Technical appendix

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

Business context

Business profile

SilesNet operates as a niche ISP focusing on fiber-optic internet connectivity for apartments, homes, and businesses in Poland. Their competitive advantage lies in their long-standing market presence and emphasis on customer-centric service and technical support. The business model is subscription-based internet service provision with additional technical support offerings. The company targets residential customers in urban apartment blocks and single-family homes, as well as small to medium enterprises and organizations. The presence of a Czech language site indicates cross-border or regional expansion efforts. The company maintains a clear brand identity and leverages digital marketing tools for customer engagement. No major partnerships or subsidiaries were identified beyond the Czech site. The business appears stable with a focus on quality and customer satisfaction.

Security posture

The security maturity of SilesNet's website is moderate. HTTPS is used, ensuring encrypted communication. A cookie consent mechanism is implemented, indicating awareness of privacy regulations. However, the absence of DNSSEC reduces DNS security, and no security headers were detected in the provided data, which could expose the site to common web attacks. There is no published security policy or incident response contact information, which limits transparency and preparedness communication. No vulnerabilities or exposed sensitive data were found in the analysis, but the lack of visible security best practices suggests room for improvement. The use of third-party scripts like Google Analytics and Tag Manager introduces moderate tracking but is common practice. Overall, the security posture is adequate for a small ISP but should be enhanced to meet higher compliance and security standards.

Recommendations

  1. Enable DNSSEC on the domain to improve DNS integrity and security.
  2. Implement and configure security headers such as Content-Security-Policy, Strict-Transport-Security, X-Frame-Options, and X-Content-Type-Options.
  3. Publish a clear privacy policy and terms of service pages to improve transparency and compliance.
  4. Develop and publish a security policy and incident response contact information to enhance trust and preparedness.
  5. Conduct regular security audits of website dependencies and scripts to identify and mitigate vulnerabilities.

Contact details published on the site

Addresses
Legal name
SilesNet Polska Sp. z o. o.
Registration number
REGON: 933040425
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
SilesNet Polska Sp. z o. o.
Description
SilesNet is a telecommunications operator providing reliable high-speed symmetric fiber-optic internet services with over 21 years of experience. They offer tailored internet solutions for apartments in blocks, homes (fiber or wireless), and businesses/organizations. They emphasize professional support, fast service, and individual customer approach.
Key services
Fiber-optic internet for apartments, Fiber-optic and wireless internet for homes, Customized internet services for companies and organizations, Technical support and network services
Content quality
good
Branding
consistent

Technology

Stack
HTML5, CSS3, JavaScript, Swiper.js (slider), Google Tag Manager, Google Analytics
Performance
moderate
Mobile
good
Accessibility
basic
SEO
basic

Security

Observed score
55/100
Good practices seen
  • HTTPS usage (implied by URLs)
  • Cookie consent mechanism implemented

Analytics and tracking

Services
Google Analytics
Tracking level
moderate
Privacy practices
basic

Advertising

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 in Polish and targets Polish customers.
  3. No explicit privacy policy or terms of service pages found.
  4. Cookie consent mechanism is implemented and functional.
  5. Contact information is clearly presented in footer.
  6. No security policy or incident response information published.
  7. Modern JavaScript libraries used for UI (Swiper.js).
  8. Google Analytics and Tag Manager used for tracking.
  9. No DNSSEC enabled for domain.
  10. No visible security headers in provided data.
Technical notes

Notes

The website is built using standard modern web technologies including HTML5, CSS3, and JavaScript. It uses Swiper.js for interactive sliders and integrates Google Tag Manager and Google Analytics for marketing and analytics. The site is mobile responsive and has a clear navigation structure. Hosting appears to be with a Polish provider related to the registrar AZ.pl. Performance is moderate with no obvious issues. Accessibility is basic but could be improved. SEO is basic with meta tags and Open Graph tags present but no advanced structured data like JSON-LD detected. No CMS was identified, suggesting a custom or static site build. Overall, the technical implementation is solid but could benefit from enhanced accessibility and SEO features.
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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