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Security report for nejvyhodnejsitarify.cz

NejvýhodnějšíTarify.cz · Telecommunications · Czech Republic

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

Security score

58/100

Risk levelMedium

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

NejvýhodnějšíTarify.cz is a Czech Republic based website specializing in Vodafone mobile tariff offers and comparisons. The site targets consumers looking to save money on Vodafone plans by providing detailed tariff options, special discounts, and an operator-assisted ordering process. The business operates as a small entity focused on lead generation and tariff sales within the telecommunications sector. Technically, the website uses legacy JavaScript libraries such as jQuery 1.8.2, Google Analytics, and custom scripts, hosted on a Czech hosting provider. The site is moderately optimized for performance and mobile use but lacks advanced accessibility features. Security posture is basic with HTTPS usage but missing important security headers and policies. Privacy compliance is weak due to absence of privacy and cookie policies. Overall, the site is legitimate with consistent WHOIS data and a domain age of over a decade, but improvements in security and privacy transparency are recommended.

Scanned

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

  2. Email security

    SPF, DKIM and DMARC stop others sending email that looks like it comes from your domain, a common route to phishing and invoice fraud.

    • Critical

      No email authentication configured

      Domain is vulnerable to email spoofing

      What to do: Implement SPF, DKIM, and DMARC immediately

  3. 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';…

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

Keep watching nejvyhodnejsitarify.cz

This scan found 24 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
85
Security headers
20
Email security
60
DNS health
75
Network security
100
GDPR outside view
10
Average
58

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

The website holds a niche position in the Czech telecommunications market, focusing exclusively on Vodafone tariffs. Its business model revolves around affiliate marketing and direct customer engagement via callback forms. The site leverages partnerships with related tariff comparison and financial service websites to enhance its offering. The target audience is Czech consumers seeking affordable mobile plans, including students and seniors. The company has maintained a stable online presence since 2011, indicating sustained market relevance. However, the lack of direct contact emails and physical addresses limits transparency. The site’s content and offers are straightforward, supporting user decision-making in tariff selection.

Security posture

The security maturity level is basic. The site uses HTTPS but lacks critical security headers such as Content Security Policy (CSP), HTTP Strict Transport Security (HSTS), and X-Frame-Options. No security.txt or incident response contacts are provided, limiting readiness for vulnerability reporting. The use of an outdated jQuery version may expose the site to known vulnerabilities. Form inputs are validated client-side but no advanced bot protection or CAPTCHA is active by default. Privacy and cookie policies are missing, which is a compliance gap under GDPR. Overall, the site’s security posture requires enhancements to protect user data and improve trust.

Recommendations

  1. Implement comprehensive privacy and cookie policies with clear GDPR compliance statements.
  2. Add and configure security headers including CSP, HSTS, and X-Frame-Options to mitigate common web attacks.
  3. Upgrade JavaScript libraries to current supported versions to reduce vulnerability exposure.
  4. Introduce a security.txt file and provide clear incident response contact information.
  5. Enhance mobile responsiveness and accessibility to improve user experience and compliance.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
NejvýhodnějšíTarify.cz
Description
Website offers Vodafone mobile tariffs and related services, including special offers, tariff comparisons, and ordering assistance via operator contact.
Key services
Vodafone tariff offers, Tariff comparison calculator, Order form with operator callback, SMS Vodafone service
Content quality
good
Branding
moderate

Technology

Stack
jQuery 1.8.2, Google Analytics, Custom JavaScript, CSS stylesheets
Performance
moderate
Mobile
basic
Accessibility
basic
SEO
basic

Security

Observed score
50/100
Good practices seen
  • Use of HTTPS (implied by base href https://)
  • Form validation with jquery.validationEngine

Analytics and tracking

Services
Google Analytics, Google Tag Manager
Tracking level
moderate
Privacy practices
poor

Advertising

Marketing tools
Ornicus tracking script
Transparency
basic

Site quality

Design
basic
User experience
basic
Content relevance
good
Navigation
good
Professionalism
basic
Trustworthiness
moderate

Key observations

  1. Website offers Vodafone tariff comparison and ordering services in Czech language.
  2. No privacy or cookie policy pages found, only terms of service.
  3. Contact via phone and order forms present but no direct emails or physical addresses.
  4. Uses older jQuery version (1.8.2) and basic JavaScript libraries.
  5. No advanced security headers or policies detected.
  6. Google Analytics and Tag Manager used with default consent set to denied.
  7. No WAF or blocking detected; site fully accessible.
  8. Content safe for general audiences; no adult or questionable content.
  9. Domain WHOIS data consistent and domain age supports legitimacy.
Technical notes

Notes

The website is built with traditional web technologies including HTML, CSS, and JavaScript with jQuery 1.8.2. It uses Google Analytics and Google Tag Manager for tracking, with consent set to deny by default. Hosting is provided by a Czech hosting company (cesky-hosting.eu). The site lacks a modern CMS or framework and shows signs of legacy code. Performance is moderate with no explicit optimization techniques detected. SEO is basic with meta tags present but no structured data like JSON-LD or Open Graph tags. Accessibility features are minimal. The site would benefit from modernization including responsive design, updated libraries, and enhanced SEO and accessibility compliance.
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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