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Security report for solfeg.io

Domains By Proxy, LLC · Education · United States

Medium risk. 5 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

Solfeg.io is a music education platform offering an app and online tools designed to enhance student engagement in music lessons for schools and individual learners. The company has established a solid market presence since its domain registration in 2016, serving over 25,000 schools with a highly rated product. The platform supports multiple instruments and provides interactive lessons, real-time feedback, and AI assistance to users. Technically, the website is built on Webflow with integrations for analytics and marketing, optimized for mobile and desktop users. Security posture is adequate with HTTPS and domain protections, but lacks advanced security headers and published policies. Privacy compliance is weak due to missing privacy and cookie policies, and no explicit contact information is provided on the site. Overall, the site is professional and trustworthy but would benefit from enhanced privacy and security transparency.

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

5 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 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"

  2. 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

    • 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

  3. 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.

    • High

      Weak Protocols Supported

      Server supports weak protocols: TLSv1.1

      What to do: Disable TLS 1.0, TLS 1.1, and all SSL versions

      • CWE-327
      • OWASP A04:2025
      • ASVS V12.1.1

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

Keep watching solfeg.io

This scan found 27 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

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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
62
Security headers
30
Email security
70
DNS health
70
Network security
100
GDPR outside view
53
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

Breach exposure

Leaked credentials and lookalike domains from OffSeq Breach. The counts are free; the detailed lists are paid add-ons.

Dark web exposure

Add-on

Leaked records that mention solfeg.io, from OffSeq Breach.

Total records
448
Employees
0
Customers
448
Third parties
0
Weak passwords
11%

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 solfeg.io.

Select it in the checkout above.

Breach keeps ingesting new leaks, so these numbers can grow between scans.

Technical appendix

Business context, site observations and technical notes gathered during the scan, and the standards behind each reference.

Business context

Business profile

The business targets educational institutions and individual music learners, leveraging a subscription model for app usage and online platform access. Its competitive advantage lies in its Easy Notation™ method and engaging content, supported by strong user ratings and a broad customer base. The company uses modern digital marketing and analytics tools to track user engagement and optimize offerings. Partnerships with app stores and trusted educational entities reinforce its market position. However, the lack of visible contact and compliance documentation may impact trust with privacy-conscious customers.

Security posture

The website employs HTTPS and domain registration protections but lacks visible security headers such as Content Security Policy or HSTS. No vulnerability disclosure or incident response information is published, which limits transparency in security management. Tracking pixels from Facebook and TikTok indicate moderate user tracking, but no cookie consent mechanism was found. The absence of privacy and cookie policies is a compliance gap, especially under GDPR. Overall, the security maturity is moderate but could be improved by implementing best practices and publishing relevant policies.

Recommendations

  1. Publish a comprehensive privacy policy and cookie policy with GDPR compliance details.
  2. Implement a cookie consent mechanism to inform and obtain user consent for tracking.
  3. Add security headers like CSP, HSTS, X-Frame-Options to enhance protection.
  4. Provide clear contact information including support and security incident contacts.
  5. Consider publishing a vulnerability disclosure policy and security.txt file.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Domains By Proxy, LLC
Description
Solfeg.io is a music education app and software designed to increase student engagement in music lessons, offering tools for schools and self-learning with a focus on easy notation and interactive song libraries.
Key services
Music teaching app, Online platform for schools, Self-learning mobile app, Interactive music lessons, Real-time feedback, AI help and guidance
Content quality
good
Branding
consistent

Technology

Stack
Webflow, Google Fonts (Poppins), TikTok Analytics, Facebook Pixel, Brevo Conversations (chat widget), True Audio Player
Frameworks
Webflow CMS
Platforms
iOS, Android, Web
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
75/100
Good practices seen
  • HTTPS enabled
  • Domain status includes clientDeleteProhibited and other EPP protections

Analytics and tracking

Services
TikTok Analytics, Facebook Pixel, Google Analytics (via GTM)
Tracking level
moderate
Privacy practices
poor

Advertising

Tracking pixels
TikTok Analytics, Facebook Pixel
Marketing tools
Brevo Conversations chat
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 rich content and multimedia
  2. No explicit privacy, cookie, or terms of service pages found in provided content
  3. Multiple tracking and marketing pixels present indicating active user analytics
  4. No direct contact emails or phone numbers found on main pages
  5. Domain uses privacy protection service for WHOIS
  6. Website uses modern web technologies and is mobile optimized
  7. No security.txt or vulnerability disclosure found
  8. No explicit security or incident response policies published
Technical notes

Notes

The website is built using Webflow CMS with modern front-end technologies and integrates multiple third-party analytics and marketing scripts. It is mobile optimized and uses Google Fonts for typography. Hosting appears to be via Webflow with domain registration through GoDaddy and privacy protection enabled. Performance is moderate with asynchronous loading of scripts. Accessibility features are basic, with some focus styles and semantic HTML. SEO is supported by meta tags and Open Graph data. Technical risks include lack of DNSSEC and missing security headers, which should be addressed to improve resilience.
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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