GreyCortex s.r.o. · Technology · Czech Republic
Medium risk. 5 critical or high findings in Security headers, GDPR outside view and 1 other check.
GreyCortex s.r.o. is a Czech Republic-based cybersecurity company specializing in network detection and response solutions for IT and OT networks. Their flagship product, GREYCORTEX Mendel, leverages AI and machine learning to provide deep network visibility, advanced threat detection, and automated incident response. The company serves a diverse range of sectors including government, energy, banking, healthcare, manufacturing, and education, positioning itself as a trusted provider in the cybersecurity market. The website reflects a professional and mature business with clear branding, comprehensive content, and strong trust indicators such as ISO 27001 certification and customer testimonials. Technically, the website is built on Drupal CMS with modern web technologies including jQuery and Google Tag Manager for analytics and marketing. The site is well-optimized for performance, mobile responsiveness, and accessibility. Hosting and DNS services are provided by reputable providers including WEDOS Internet and Cloudflare. Security best practices are observed with HTTPS enforced and cookie consent mechanisms implemented, although some security headers could be improved and DNSSEC is not enabled. From a security posture perspective, the website shows no signs of vulnerabilities or exposed sensitive data. Privacy compliance is strong with a comprehensive privacy policy and cookie consent banner aligned with GDPR requirements. However, the absence of a terms of service page and explicit incident response contact or vulnerability disclosure policy are minor gaps. Overall, the domain registration data is consistent with the business claims, supporting the legitimacy and trustworthiness of the company. The overall risk assessment is low with no critical issues detected. Strategic recommendations include enabling DNSSEC, adding security headers, publishing terms of service and incident response information to enhance transparency and trust. The website and company demonstrate a solid security culture and digital maturity appropriate for their market position.
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.
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
These are the privacy signals visitors and data protection authorities look for under GDPR.
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
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
SSL certificate uses 256-bit key, which is considered weak
What to do: Use at least 2048-bit RSA or 256-bit ECC key
Need hands-on remediation? Email guard@offseq.com
This scan found 23 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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Prices incl. 21% VAT. Secure checkout by Mollie; sold by SEQ SIA, Latvia.
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 greycortex.com, 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 greycortex.com.
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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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