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Security report for stemplayer.com

STEM.TECH · Technology · N/a

Medium risk. 7 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

64/100

Risk levelMedium

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

STEM.TECH operates the official STEM Player platform, offering music technology products and streaming services such as STEM FM. The website targets music enthusiasts and technology users interested in innovative audio experiences. The business model combines e-commerce hardware sales with digital music streaming, positioning itself as a niche player in the music technology sector. The site uses modern web technologies including React, Material UI, and Shopify for commerce integration, supported by analytics tools like Google Analytics, Hotjar, and PostHog. While the website is well-designed and mobile-optimized, it lacks visible privacy and cookie policies, which impacts compliance and user trust. Security posture is moderate with HTTPS implied but missing explicit security headers and incident response contacts. WHOIS data is unavailable, which raises concerns about domain legitimacy and transparency. Overall, the site is functional and professional but would benefit from enhanced compliance and security disclosures.

Scanned

NIS2 and GDPR posture

GDPR outside view
35/ 100 · High
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

7 findings rated critical or high. Fix these first.

  1. 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';…

  2. GDPR outside view

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

    • High

      No Privacy Policy found

      GDPR requires a clear and accessible privacy policy

      What to do: Add a comprehensive privacy policy page and link to it prominently

    • 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

    • High

      No Cookie Consent Banner found

      GDPR requires explicit consent for non-essential cookies

      What to do: Implement a cookie consent banner that appears on first visit

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

Keep watching stemplayer.com

This scan found 24 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

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  • 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
75
Security headers
30
Email security
70
DNS health
75
Network security
100
GDPR outside view
35
Average
64

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

The company appears to focus on a specialized market segment combining music and technology, leveraging e-commerce and streaming services. The presence of Shopify integration suggests a direct-to-consumer sales approach. Social media presence on platforms like Twitter (X), TikTok, and Instagram supports marketing efforts targeting younger, tech-savvy audiences. Absence of detailed company registration or contact information limits full business intelligence. The use of affiliate marketing (Refersion) indicates partnerships to expand reach. The business is likely small-sized and focused on product innovation and niche market penetration.

Security posture

The website employs HTTPS and uses standard analytics and tracking scripts, but lacks visible security headers such as Content-Security-Policy or X-Frame-Options. No privacy or cookie policies are presented, which is a compliance gap under GDPR and other privacy regulations. No incident response or vulnerability disclosure information is available, limiting transparency and readiness for security incidents. The absence of WHOIS data reduces trust and raises questions about domain registration legitimacy. Overall, the security posture is moderate but requires improvements in policy transparency, header implementation, and incident readiness.

Recommendations

  1. Publish comprehensive privacy and cookie policies to improve GDPR compliance and user trust.
  2. Implement and configure security headers including Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security.
  3. Provide clear contact information including security incident response channels.
  4. Add a vulnerability disclosure policy or security.txt file to enhance transparency and security culture.
  5. Verify and disclose domain registration details to improve legitimacy and trustworthiness.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
STEM.TECH
Description
PRODUCTS AND MUSIC
Key services
STEM Player hardware sales, STEM FM streaming service, Music technology products
Content quality
good
Branding
consistent

Technology

Stack
Shopify Buy Button SDK, Google Tag Manager, Hotjar, PostHog analytics
Frameworks
Material UI
Platforms
Shopify (for e-commerce)
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
70/100
Good practices seen
  • HTTPS implied by canonical URL
  • No visible exposed sensitive data

Analytics and tracking

Services
Google Analytics, Hotjar, PostHog
Tracking level
moderate
Privacy practices
poor

Advertising

Tracking pixels
Hotjar, PostHog
Transparency
basic

Site quality

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

Key observations

  1. Website is fully accessible with no blocking or WAF challenges.
  2. No privacy, cookie, or terms of service policies found on the main page.
  3. No contact emails or phone numbers explicitly provided.
  4. E-commerce functionality integrated via Shopify Buy Button.
  5. Social media links present for Discord, Instagram, X (Twitter), TikTok.
  6. Use of multiple analytics and tracking services without visible privacy disclosures.
  7. WHOIS data unavailable, indicating privacy or unregistered domain.
Technical notes

Notes

The website uses a modern front-end stack with React and Material UI, combined with Shopify Buy Button SDK for e-commerce functionality. Analytics and user behavior tracking are implemented via Google Analytics, Hotjar, and PostHog, indicating a focus on data-driven marketing and UX optimization. The site is mobile-optimized and has good SEO metadata including Open Graph and Twitter cards. Performance is moderate with some heavy media content (videos and images). Accessibility features are basic and could be improved. Hosting provider details are not explicitly found. Overall, the technical infrastructure is solid but could benefit from enhanced accessibility and 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

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