Národní knihovna ČR · Government · Czech Republic
High risk. 10 critical or high findings in GDPR outside view, Email security and 2 other checks.
The website www.caslin.cz serves as the portal for CASLIN, the Union Catalogue of the Czech Republic, operated by the National Library of the Czech Republic (Národní knihovna ČR). It provides a centralized electronic catalogue aggregating bibliographic records from cooperating Czech libraries and institutions, including books, magazines, articles, and special documents. The portal supports bilingual search interfaces in Czech and English, targeting libraries, researchers, and the general public interested in accessing comprehensive bibliographic data. The project is positioned as a government non-profit initiative with a medium-sized operational scope. Technically, the website employs a relatively simple technology stack including jQuery 1.11.3, FontAwesome icons, and Google Analytics for tracking. The site uses external resources hosted on trusted domains such as aleph.nkp.cz for search functionality. While the site is accessible and functional with a good user experience and clear navigation, some technical aspects such as the use of an outdated jQuery version and mixed HTTP/HTTPS content introduce security risks. Mobile optimization and accessibility are basic but adequate for the target audience. From a security perspective, the site uses HTTPS but lacks visible security headers and employs outdated JavaScript libraries, which could expose it to vulnerabilities. No sensitive data is exposed in the HTML, and forms submit queries to a trusted external domain. Privacy compliance is partial; a privacy statement is present but no cookie consent mechanism is detected. WHOIS data is unavailable publicly, likely due to privacy protection, which is justified given the government affiliation. Overall, the website is a credible, government-backed resource with good content quality and business credibility. However, technical and security improvements are recommended to modernize the infrastructure, enhance security posture, and improve privacy compliance. Strategic recommendations include updating JavaScript libraries, enforcing HTTPS-only content, implementing security headers, and adding cookie consent mechanisms to align with GDPR requirements.
Scanned
NIS2 Art. 21(2)
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.
10 findings rated critical or high. Fix these first.
These are the privacy signals visitors and data protection authorities look for under GDPR.
EU businesses are subject to strict GDPR requirements
What to do: Implement comprehensive GDPR compliance including privacy policy, cookie consent, and data protection measures
GDPR requires a clear and accessible privacy policy
What to do: Add a comprehensive privacy policy page and link to it prominently
GDPR requires clear information about cookie usage
What to do: Add a dedicated cookie policy explaining cookie usage and purposes
GDPR requires explicit consent for non-essential cookies
What to do: Implement a cookie consent banner that appears on first visit
Detected services: Google Analytics, Google APIs
What to do: Document all third-party data sharing in your privacy policy
SPF, DKIM and DMARC stop others sending email that looks like it comes from your domain, a common route to phishing and invoice fraud.
Domain is vulnerable to email spoofing
What to do: Implement SPF, DKIM, and DMARC immediately
TLS encrypts the connection and proves the site is really yours. Weak or expiring certificates trigger browser warnings and put traffic at risk.
Could not establish secure connection to retrieve certificate information
What to do: Check if the server is accessible and SSL/TLS is properly configured
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.
Forces HTTPS connections
What to do: Add "Strict-Transport-Security: max-age=31536000; includeSubDomains; preload"
Prevents clickjacking attacks
What to do: Add "X-Frame-Options: DENY" or "X-Frame-Options: SAMEORIGIN"
Controls resources the browser is allowed to load
What to do: Implement a Content-Security-Policy appropriate for your application
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Each check with its score, findings and the evidence it collected.
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
Not counted
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.
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
Leaked credentials and lookalike domains from OffSeq Breach. The counts are free; the detailed lists are paid add-ons.
Leaked records that mention caslin.cz, from OffSeq Breach.
2 subdomains 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 caslin.cz.
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Breach keeps ingesting new leaks, so these numbers can grow between scans.
Business context, site observations and technical notes gathered during the scan, and the standards behind each reference.
Automated reading of the public site. Ratings are indicative.
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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