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Security report for prihlasse.cz

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

Medium risk. 11 critical or high findings in GDPR outside view, Email security and 2 other checks.

Security score

55/100

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., providing login services via popular social networks such as Facebook, Google, Seznam, and Apple, as well as traditional email and password methods. The service targets general internet users primarily within the Czech Republic, offering a streamlined authentication experience to reduce password management burdens. The website is professionally designed with consistent branding and clear navigation, supporting a good user experience. Technically, the website employs modern web technologies including Google Analytics, Google Tag Manager, and FontAwesome icons, hosted likely by Wedos based on registrar data. The site is mobile-optimized and uses HTTPS, but lacks some advanced security headers and cookie consent mechanisms, indicating room for improvement in privacy compliance and security hardening. From a security perspective, the site demonstrates a moderate security posture with secure form inputs and encrypted connections. However, the absence of explicit security policies, incident response contacts, and vulnerability disclosure mechanisms suggests limited transparency in security governance. No critical vulnerabilities or exposed sensitive data were detected in the provided content. Overall, the website presents a moderate risk profile with a stable domain history and consistent business information. Strategic improvements in privacy compliance, security headers, and incident response transparency would enhance trust and security posture significantly.

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

11 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';…

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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
62
Security headers
20
Email security
60
DNS health
75
Network security
100
GDPR outside view
10
Average
55

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 niche authentication service provider in the Czech Republic, leveraging social login integrations to simplify user access across partner sites. The business model focuses on providing authentication as a service, reducing password fatigue for users and increasing security through federated identity providers. The company appears small in size with a focused market segment. The domain age of over a decade supports business stability. The lack of visible contact information and limited policy disclosures may impact user trust and regulatory compliance. The company benefits from integration with major social platforms and uses Google Analytics for user behavior insights, indicating a data-driven approach to service improvement. No evident partnerships or subsidiaries were identified from the data.

Security posture

The security posture of Přihlaš.se is moderate. The site enforces HTTPS and uses secure form fields with autocomplete attributes, reducing risk of credential interception. However, the absence of security headers such as Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options reduces defense-in-depth. No vulnerability disclosure or security contact information is provided, limiting transparency and incident response readiness. Google Analytics and Tag Manager scripts are present, which may raise privacy concerns without explicit cookie consent. No exposed sensitive data or known vulnerabilities were detected. Overall, the site follows basic security best practices but would benefit from enhanced security controls and compliance measures.

Recommendations

  1. Implement comprehensive security headers including Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options to improve protection against common web attacks.
  2. Add a cookie policy and consent mechanism to comply with GDPR and enhance user privacy transparency.
  3. Publish a security policy and provide clear incident response contact information to improve trust and readiness.
  4. Consider establishing a vulnerability disclosure program or security.txt file to encourage responsible reporting of security issues.
  5. Enhance accessibility features and SEO optimization to improve user experience and search engine 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 and authentication via social networks and traditional login/password methods.
Key services
User login via Facebook, Google, Seznam, Apple, Traditional email and password login, Password recovery and user registration
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 visible exposed sensitive data
  • 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 authentication services primarily for Czech users.
  2. No contact emails or phone numbers explicitly listed on the page.
  3. Privacy policy is linked but cookie policy and terms of service are missing.
  4. Use of modern web fonts and icons (Google Fonts, FontAwesome).
  5. Google Analytics and Tag Manager used for tracking user behavior.
  6. No visible security headers detected in provided data; potential improvement area.
  7. No explicit vulnerability disclosure or security contact information found.
  8. Domain is stable and registered with a reputable registrar (Wedos).
  9. No adult or questionable content detected; content is safe for general audiences.
Technical notes

Notes

The website uses a modern tech stack with HTML5, CSS, JavaScript, Google Fonts, FontAwesome icons, and Google Analytics for tracking. Hosting is likely provided by Wedos, a reputable Czech hosting provider. The site is mobile-optimized and loads multiple JavaScript bundles for functionality. Performance is moderate with asynchronous loading of analytics scripts. No CMS or major frameworks were explicitly detected. The site lacks advanced SEO meta tags and accessibility features, indicating potential technical debt. Security headers are missing, representing a technical risk. Overall, the infrastructure is stable but could benefit from modernization and enhanced security configurations.
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. 56/100Medium35 findingsView report
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