CESNET · Education · Czech Republic
Low risk. 5 critical or high findings in GDPR outside view, Security headers and 1 other check.
CESNET is a Czech association of legal entities providing advanced information and communication technology services primarily for science, research, and education sectors. It operates and develops an academic computer network and offers services including secure authentication, high-performance computing, data storage, and communication tools. The organization serves a large user base including students, researchers, academics, and university staff, positioning itself as a key ICT infrastructure provider in the Czech academic community. The website reflects a mature digital presence with professional design, clear navigation, and comprehensive service descriptions. Technically, the site uses modern JavaScript libraries and frameworks, supports mobile responsiveness, and integrates Google reCAPTCHA for form security. Security posture is good with HTTPS enforced and cookie consent mechanisms in place, though some security headers and explicit security policies could be improved. WHOIS data is unavailable, which limits domain registration trust analysis, but the website's professionalism and certifications like TÜV support its legitimacy. Overall, CESNET demonstrates a strong market position in academic ICT services with a well-maintained digital platform.
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.
5 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
Detected services: Google Analytics, Facebook, Twitter, LinkedIn, YouTube
What to do: Document all third-party data sharing in your privacy policy
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.
Controls resources the browser is allowed to load
What to do: Implement a Content-Security-Policy appropriate for your application
TLS encrypts the connection and proves the site is really yours. Weak or expiring certificates trigger browser warnings and put traffic at risk.
Server supports weak protocols: TLSv1.1
What to do: Disable TLS 1.0, TLS 1.1, and all SSL versions
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This scan found 15 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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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 ces.net, from OffSeq Breach.
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 ces.net.
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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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