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Security report for kasta.ua

Kasta · E-commerce · Ukraine

Medium risk. 3 critical or high findings in SSL/TLS and Security headers.

Security score

63/100

Risk levelMedium

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

Kasta.ua is a major Ukrainian online marketplace specializing in fashion and lifestyle products, offering over 5 million items from more than 17,000 brands. The platform targets a broad audience including women, men, and children, providing a wide range of products such as clothing, footwear, accessories, cosmetics, toys, sports goods, and home products. The website features active promotional campaigns and supports mobile applications for iOS and Android, indicating a mature digital presence. Technically, the site employs modern web technologies including React and Google Identity Services, with good mobile optimization and SEO practices. Security posture is strong with HTTPS enforcement and cookie consent mechanisms, though explicit public security policies and incident response details are not found. Overall, Kasta.ua demonstrates a high level of professionalism, trustworthiness, and compliance with privacy regulations, making it a reliable e-commerce platform in the Ukrainian market.

Scanned

NIS2 and GDPR posture

GDPR outside view
95/ 100 · Low
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

3 findings rated critical or high. Fix these first.

  1. SSL/TLS

    TLS encrypts the connection and proves the site is really yours. Weak or expiring certificates trigger browser warnings and put traffic at risk.

    • Critical

      Unable to retrieve SSL certificate

      Could not establish secure connection to retrieve certificate information

      What to do: Check if the server is accessible and SSL/TLS is properly configured

  2. 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 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 kasta.ua

This scan found 17 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

€25per month

  • 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
0
Security headers
25
Email security
75
DNS health
85
Network security
100
GDPR outside view
95
Average
63

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

Kasta.ua holds a strong market position as a large-scale e-commerce marketplace in Ukraine, leveraging a broad product catalog and extensive brand partnerships. Its business model focuses on marketplace operations with supplier onboarding via a dedicated partner hub. The platform's revenue streams likely include direct sales, commissions from partners, and promotional campaigns. The target customer segments are diverse, covering all age groups and genders interested in fashion and lifestyle products. Growth indicators include frequent promotional events and a comprehensive mobile app presence. The partnership ecosystem is supported by the hub.kasta.ua domain, facilitating supplier relations. Strategic observations suggest continued expansion through marketing, technology upgrades, and enhanced customer engagement.

Security posture

The website exhibits a mature security posture with mandatory HTTPS, cookie consent enforcement, and secure form handling. Security headers such as Referrer-Policy are present, though others like Content-Security-Policy and X-Frame-Options are not explicitly confirmed. No exposed sensitive data or vulnerable libraries were detected in the analyzed content. However, the absence of a public security policy or incident response information limits transparency. Compliance with GDPR is indicated by privacy and cookie policies. Incident response readiness and vulnerability disclosure mechanisms are not publicly documented, representing potential areas for improvement. Overall, the security maturity is good but could benefit from enhanced transparency and additional security headers.

Recommendations

  1. Publish a dedicated security policy page outlining security practices and controls.
  2. Implement and publicize an incident response plan and contact channels for security issues.
  3. Add a security.txt file or vulnerability disclosure policy to encourage responsible reporting.
  4. Enhance HTTP security headers such as Content-Security-Policy, X-Frame-Options, and X-XSS-Protection.
  5. Regularly audit third-party scripts and dependencies to mitigate supply chain risks.

Contact details published on the site

Addresses
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Kasta
Description
Модний маркетплейс Kasta пропонує понад 5 мільйонів товарів для жінок, чоловіків і дітей, включаючи одяг, взуття, аксесуари, косметику, іграшки, товари для спорту, відпочинку та дому. Онлайн розпродажі та акції від 17000 брендів.
Key services
Онлайн продаж товарів, Промоакції та розпродажі, Партнерська програма, Мобільні застосунки iOS та Android
Content quality
excellent
Branding
consistent

Technology

Stack
React (implied by React container divs), Google Identity Services, Lazy loading images, Custom API endpoints (api.kasta.ua), CSS with versioning, Google Tag Manager
Frameworks
React
Platforms
Web, iOS app, Android app
Performance
moderate
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Cookie consent required
  • No exposed sensitive data in HTML
  • Secure forms with input validation

Analytics and tracking

Services
Google Tag Manager
Tracking level
moderate
Privacy practices
good

Advertising

Transparency
basic

Site quality

Design
excellent
User experience
excellent
Content relevance
excellent
Navigation
excellent
Professionalism
excellent
Trustworthiness
high

Key observations

  1. Website is a large Ukrainian e-commerce marketplace with extensive product offerings.
  2. Content is rich, well-structured, and localized primarily in Ukrainian with Russian alternate.
  3. Multiple promotional campaigns and brand partnerships are actively advertised.
  4. Privacy and cookie policies are present and indicate GDPR compliance.
  5. Contact information includes multiple phone numbers with clear labeling.
  6. No signs of blocking or WAF challenges detected.
  7. Security posture is good but lacks explicit public security policy and incident response info.
  8. Technical stack uses modern web technologies and supports mobile platforms.
  9. Tracking and marketing tools are standard and privacy compliant.
Technical notes

Notes

Kasta.ua uses a modern technology stack centered around React for frontend rendering, supported by custom APIs hosted on api.kasta.ua. The site employs lazy loading for images and integrates Google Identity Services for authentication. Performance is moderate with good mobile optimization and accessibility features. SEO is well addressed through meta tags and Open Graph data. The platform supports mobile apps on iOS and Android, enhancing user reach. Hosting details are not explicitly identified but the use of CDN domains suggests a distributed content delivery approach. Technical risks are minimal, though continuous monitoring of third-party scripts and API security is advised to maintain operational integrity.
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

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