Skip to main content

Security report for stellis.co

Stellis · Technology · Poland

High risk. 8 critical or high findings in Network security, Security headers and 2 other checks.

Security score

45/100

Risk levelHigh

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

Stellis is a small technology company founded in 2021, specializing in sports technology solutions. Their flagship product, Stellis One, offers an integrated platform for sports organizations. The company positions itself as a trusted tech partner for the digital transformation of sports entities, leveraging a team of executive managers, developers, and consultants with a passion for sports. Their market position is focused on innovation and comprehensive digital tools tailored to sports organizations. Technically, the website is built on WordPress with modern plugins and uses Google Analytics for tracking. The site is mobile optimized and SEO friendly, though performance is moderate. Security posture is good with HTTPS enabled and no obvious vulnerabilities, but lacks advanced security headers and explicit security policies. Privacy compliance is weak due to missing privacy and cookie policies. Overall, the site is professional and trustworthy but could improve transparency and compliance.

Scanned

NIS2 and GDPR posture

GDPR outside view
53/ 100 · Medium
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

8 findings rated critical or high. Fix these first.

  1. Network security

    Services reachable from the internet are the first thing attackers probe. Anything open that does not need to be should be closed.

    • Critical

      Critical Service Exposed: PostgreSQL

      Port 5432 (PostgreSQL) is publicly accessible - PostgreSQL - Database server

      What to do: Immediately restrict access to PostgreSQL using firewall or VPN

      • NIS2 21(2)(e)
      • IR 2024/2690 6.7.2(f): Implementing Regulation (EU) 2024/2690, Annex point 6.7.2(f): Network security
      • NIST CM-7: NIST SP 800-53 Rev. 5 CM-7: Least Functionality
      • NIST SC-7: NIST SP 800-53 Rev. 5 SC-7: Boundary Protection

  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 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';…

  3. GDPR outside view

    These are the privacy signals visitors and data protection authorities look for under GDPR.

    • High

      No Cookie Policy found

      GDPR requires clear information about cookie usage

      What to do: Add a dedicated cookie policy explaining cookie usage and purposes

Need hands-on remediation? Email guard@offseq.com

Keep watching stellis.co

This scan found 29 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

Email alerts on material changes and an exportable JSON history of every change.

Billed monthly to your card. Cancel anytime. The full timeline opens with your unlock code.

Full report

€39.90one-time

  • The complete analysis as a PDF you can cite
  • Email delivery with an unlock code
  • Lifetime access to this report

Prices incl. 21% VAT. Secure checkout by Mollie; sold by SEQ SIA, Latvia.

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
35
Email security
55
DNS health
65
Network security
0
GDPR outside view
53
Average
45

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 · found on this site
  • 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

Stellis operates in the sports technology sector, targeting sports organizations and related businesses. Their business model revolves around SaaS and digital tools for sports management. The company benefits from EU grant support, indicating some level of external validation and funding. Their partnership ecosystem includes the stellis.one domain as a key product site. Growth indicators include active social media presence and a modern web platform. The company leverages WordPress CMS and Kadence Blocks for content management and presentation. Revenue streams likely come from software subscriptions and consulting services. Strategic observations suggest a focus on innovation and market differentiation through comprehensive sports tech solutions.

Security posture

The website demonstrates a moderate security maturity level with HTTPS enabled and no exposed sensitive data. However, it lacks security headers such as Content Security Policy, HSTS, and X-Frame-Options, which are recommended best practices. There is no visible incident response or vulnerability disclosure information, which could hinder rapid response to security events. Privacy compliance is incomplete, with no privacy or cookie policies found, potentially exposing the company to regulatory risks under GDPR. No vulnerable libraries or insecure forms were detected. Overall, the security posture is adequate for a small tech company but requires enhancements to meet higher compliance and security standards.

Recommendations

  1. Implement and publish a comprehensive privacy policy and cookie policy with consent mechanisms to ensure GDPR compliance.
  2. Enable DNSSEC on the domain to improve DNS security and prevent spoofing.
  3. Add security headers such as Content Security Policy, HSTS, X-Frame-Options, and X-Content-Type-Options to enhance web security.
  4. Publish an incident response policy and provide dedicated security contact channels (e.g., security@stellis.co) to improve transparency and readiness.
  5. Consider adding a vulnerability disclosure policy and security.txt file to encourage responsible reporting of security issues.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Stellis
Description
Best Tech Partner, for your Digital Universe. Sports Technology Company. Stellis One All the tools for your sport organisation in one place. We believe each one of us is a star. Waiting to be uncovered. We are executive managers, developers and consultants ready to make your potential shine. Ready to create your digital stardom and dazzle the market. We are innovators, sport fanatics, retired sport professionals and parents – learning each day how to be a little better at what we love.
Key services
Stellis One - tools for sport organizations, Stellis Spark, Stellis SaaS
Content quality
good
Branding
consistent

Technology

Stack
WordPress, Kadence Blocks, jQuery, Google Analytics, Google Tag Manager, AIOSEO plugin
Platforms
WordPress CMS
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
75/100
Good practices seen
  • HTTPS enabled
  • No exposed sensitive data detected
  • No vulnerable libraries detected

Analytics and tracking

Services
Google Analytics
Tracking level
moderate
Privacy practices
poor

Advertising

Transparency
basic

Site quality

Design
good
User experience
good
Content relevance
good
Navigation
good
Professionalism
good
Trustworthiness
moderate

Key observations

  1. Website is professionally designed with clear branding and navigation
  2. No privacy or cookie policies found, indicating compliance gaps
  3. No visible contact forms or emails; only phone number found in structured data
  4. Social media presence is active and linked
  5. No explicit security or incident response information on site
  6. Uses modern WordPress plugins and Google Analytics for tracking
  7. No WAF or blocking detected; site fully accessible
Technical notes

Notes

The website is built on a modern WordPress platform using Kadence Blocks for layout and design. It employs Google Fonts and jQuery libraries, along with Google Analytics and Tag Manager for tracking. The site is mobile optimized and uses responsive design principles. Performance is moderate, with some large images and video backgrounds that may impact load times. The hosting provider is inferred as NameCheap based on WHOIS data. The site lacks advanced security headers and DNSSEC, which are technical risks. There is no evidence of outdated or vulnerable libraries. Overall, the technical infrastructure is solid but could benefit from performance optimization 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

Reviews of this site

Share your experience with stellis.co. Every review is verified by email and published after moderation.

Overall rating
Select a rating
4000 characters remaining

We’ll email you to confirm your review and keep your details private.

Community rating

No published reviews yet. Be the first to review stellis.co.

Feedback on this report

Rate this report, add an optional comment, and tell us if you want a security specialist to follow up.

Overall report quality
Select a rating
2000 characters remaining

We only use your feedback to improve Guard reports. Contact details are never shared.