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Security report for prihlasse.cz

Český internet s.r.o. · Technology · Czech Republic

Medium risk. 10 critical or high findings in GDPR outside view, Email security and 2 other checks.

Security score

56/100

Risk levelMedium

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

Přihlaš.se is a Czech-based user authentication platform operated by Český internet s.r.o., established in 2009. The website offers login services primarily through popular social networks such as Facebook, Google, Seznam, and Apple, alongside traditional email and password authentication. The service targets Czech internet users seeking a unified and simplified login experience. The business operates in the technology sector with a small company size and a niche market position focused on authentication services. Technically, the website employs modern web technologies including Google Analytics, Google Tag Manager, and FontAwesome for UI icons. It is hosted by WEDOS, a Czech hosting provider, and uses HTTPS with good SSL configuration. The site is mobile optimized with a moderate performance profile and basic accessibility features. However, it lacks explicit security headers and cookie consent mechanisms, which are areas for improvement. From a security perspective, the site demonstrates good practices such as secure form inputs and no visible sensitive data exposure. The absence of a published security policy, incident response contacts, and vulnerability disclosure reduces transparency and preparedness. The domain WHOIS data is consistent with the website content and business entity, supporting legitimacy and trustworthiness. Overall, Přihlaš.se is a professionally presented authentication service with moderate security and privacy compliance. Strategic enhancements in security headers, privacy mechanisms, and incident response transparency would strengthen its security posture and user trust.

Scanned

This is an earlier scan of prihlasse.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

10 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 prihlasse.cz

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.

Daily monitoring

Recommended

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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
20
Email security
60
DNS health
75
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

Technical appendix

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

Business context

Business profile

Český internet s.r.o. operates Přihlaš.se as a specialized authentication platform targeting Czech users. The company leverages social login integrations with major providers to reduce password fatigue and improve user convenience. The business model centers on providing authentication as a service, likely monetized through partnerships or service agreements. Market positioning is niche and local, with no evident large-scale expansion. The company maintains a consistent brand and professional web presence, though lacks extensive contact or certification disclosures. Growth potential exists through enhanced security features and expanded service offerings. The partnership with social networks and use of Google analytics tools indicate a moderate digital maturity and marketing approach.

Security posture

The website maintains a good baseline security posture with HTTPS enforced and secure form handling. However, the absence of key security headers such as Content Security Policy (CSP), HTTP Strict Transport Security (HSTS), and X-Frame-Options reduces defense-in-depth. No vulnerabilities or exposed sensitive data were detected in the HTML content. The lack of a published security policy, incident response contacts, or vulnerability disclosure program limits transparency and user confidence in security incident handling. Privacy compliance is partial, with a privacy policy present but no cookie consent mechanism. Overall, the security maturity is moderate but could be improved by adopting best practices and formalizing security governance.

Recommendations

  1. Implement comprehensive security headers including CSP, HSTS, and X-Frame-Options to enhance protection against common web attacks.
  2. Add a cookie policy and explicit consent mechanism to comply with privacy regulations and improve user transparency.
  3. Publish a security policy and incident response contact information to demonstrate preparedness and build trust.
  4. Establish a vulnerability disclosure program or security.txt file to encourage responsible reporting and improve security posture.
  5. Enhance accessibility features and SEO optimization to improve user experience and site visibility.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Český internet s.r.o.
Description
Web service providing user login authentication via social networks and traditional login/password for Czech users.
Key services
User login via Facebook, User login via Google, User login via Seznam, User login via Apple, Traditional email/password login
Content quality
good
Branding
consistent

Technology

Stack
Google Analytics, FontAwesome, Google Tag Manager, JavaScript, CSS, HTML5
Performance
moderate
Mobile
good
Accessibility
basic
SEO
basic

Security

Observed score
75/100
Good practices seen
  • HTTPS enforced
  • No exposed sensitive data in HTML
  • Secure form inputs with autocomplete attributes

Analytics and tracking

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

Advertising

Transparency
basic

Site quality

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

Key observations

  1. Website provides user login services primarily via social networks and email/password.
  2. Content is in Czech language targeting Czech users.
  3. No explicit contact emails or phone numbers found on the page.
  4. Privacy policy is linked but cookie policy and terms of service are missing.
  5. Uses Google Analytics and Tag Manager for tracking.
  6. No visible security.txt or vulnerability disclosure information.
  7. No signs of adult or questionable content.
  8. No WAF or blocking detected; site fully accessible.
Technical notes

Notes

The website uses a modern front-end stack with CSS and JavaScript, including FontAwesome for icons and Google Analytics for tracking. Hosting is provided by WEDOS, a reputable Czech provider. The site is mobile responsive and uses asynchronous loading for analytics scripts, which supports performance. However, no CMS or backend framework is explicitly detected. The site lacks advanced SEO meta tags and accessibility attributes beyond basic usage. Performance is moderate with room for optimization. The technical implementation is solid but could benefit from modernization in security headers and privacy compliance 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

Earlier scans of this domain

  1. 55/100Medium35 findingsView report
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