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Security report for rychlost.cz

Rychlost.cz · Telecommunications · Czech Republic

Medium risk. 9 critical or high findings in GDPR outside view, Security headers and 1 other check.

Security score

56/100

Risk levelMedium

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

Rychlost.cz is a well-established Czech internet speed testing website operating since 2004. It offers users the ability to measure their internet connection speeds, including download, upload, and ping metrics, and provides extensive statistical data and forums for community discussions. The site targets Czech internet users and providers, positioning itself as a trusted local resource with over 20 years of market presence. Technically, the site uses standard web technologies including JavaScript, Google Adsense for monetization, and multiple hosting providers. It is mobile-optimized and provides a good user experience with clear navigation and relevant content. Security posture is solid with HTTPS enforced and secure form submissions, though it lacks some advanced security headers and explicit incident response policies. Privacy compliance is basic with a privacy policy and cookie consent mechanism present, but no detailed data retention or DPO information. Overall, the site is credible and trustworthy, though it could improve transparency around security and contact information.

Scanned

This is an earlier scan of rychlost.cz. View the latest report

NIS2 and GDPR posture

GDPR outside view
10/ 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

9 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 Policy found

      GDPR requires clear information about cookie usage

      What to do: Add a dedicated cookie policy explaining cookie usage and purposes

  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 rychlost.cz

This scan found 27 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
42
Security headers
30
Email security
85
DNS health
70
Network security
100
GDPR outside view
10
Average
56

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 rychlost.cz, from OffSeq Breach.

Total records
397
Employees
0
Customers
397
Third parties
0
Weak passwords
34%

1 subdomain 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 rychlost.cz.

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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

The website operates in the telecommunications sector, focusing on internet speed testing and related statistics. Its business model relies on providing free testing services supported by advertising revenue, primarily Google Adsense. The site serves individual internet users and providers in the Czech Republic and neighboring countries, with multiple language versions linked. Its competitive advantage lies in its longevity, detailed statistical data, and active user forums. The partnership ecosystem includes hosting providers and sister sites in other countries. Growth indicators include regular content updates and active community engagement. Strategic observations suggest opportunities to enhance security transparency and expand direct contact channels to strengthen user trust.

Security posture

Rychlost.cz demonstrates a mature security posture with mandatory HTTPS and secure form handling. However, it lacks implementation of several recommended security headers such as Content-Security-Policy and X-Frame-Options, which could mitigate risks like clickjacking and cross-site scripting. No vulnerabilities or exposed sensitive data were detected in the HTML content. The absence of a published incident response policy or security contact channels limits transparency and readiness for security incidents. GDPR compliance is indicated by the presence of a privacy policy and cookie consent mechanism, but no dedicated Data Protection Officer contact or detailed data protection practices are disclosed. Overall, the site is secure but could benefit from enhanced security best practices and clearer incident response communication.

Recommendations

  1. Implement and publish security headers including Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options to strengthen browser security.
  2. Create and publish an incident response policy and provide dedicated security contact channels such as security@ or abuse@ email addresses.
  3. Add a security.txt file to facilitate responsible vulnerability disclosure and improve transparency.
  4. Enhance privacy compliance by detailing data retention policies and appointing a Data Protection Officer with contact information.
  5. Provide direct company contact information including verified emails and phone numbers to improve user trust and support.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Rychlost.cz
Description
Test rychlosti připojení k internetu se statistikami připojení. Rychlost internetu v ČR a ve světě.
Key services
Internet speed testing, Statistical analysis of internet speeds, Forums and discussions about internet providers and technology, Hosting test servers for providers
Content quality
good
Branding
consistent

Technology

Stack
JavaScript, Google Adsense, Google Fonts, HTML5, CSS3
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
80/100
Good practices seen
  • HTTPS enabled
  • No exposed sensitive data in HTML
  • Secure form submission via POST

Analytics and tracking

Tracking level
moderate
Privacy practices
basic

Advertising

Ad networks
Google Adsense
Tracking pixels
Google Adsense, Toplist.cz
Marketing tools
Google Funding Choices
Transparency
basic

Site quality

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

Key observations

  1. Website provides a well-established internet speed testing service focused on Czech Republic
  2. Content is primarily in Czech language with multiple language alternatives linked
  3. Includes active forums and statistical data for users and providers
  4. Uses Google Adsense for monetization and Google Funding Choices for consent management
  5. No direct emails or phone numbers found; contact via web form only
  6. No explicit security or incident response policies published
  7. No social media links detected
  8. No security.txt or vulnerability disclosure found
Technical notes

Notes

The website uses a traditional web stack with HTML5, CSS3, and JavaScript, leveraging Google Fonts and Google Adsense for monetization and styling. Hosting is distributed across multiple Czech providers, indicating a robust infrastructure. The site is mobile-optimized and includes responsive design elements. Performance is moderate, with some external scripts for ads and consent management potentially impacting load times. No CMS or advanced frameworks were detected, suggesting a custom or lightweight platform. Technical debt appears low, but opportunities exist to modernize security headers and improve accessibility features. The site’s SEO is good with proper meta tags and language alternates for internationalization.
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

Earlier scans of this domain

  1. 59/100Medium34 findingsView report
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