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Security report for trinket.io

Trinket · Education · United States

Medium risk. 6 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

Trinket is a US-based educational technology company founded in 2014 that provides an online platform for writing, running, and sharing code directly in web browsers. The platform targets individual learners, educators, and schools, offering free interactive coding resources and premium subscription plans to enhance the learning experience. Trinket positions itself as a niche player in the education sector, focusing on accessible coding education without the need for software installation. Technically, the website employs a modern but somewhat dated tech stack including AngularJS, jQuery, and various JavaScript libraries, hosted behind Cloudflare DNS and CDN services. The site is mobile-optimized and integrates Google reCAPTCHA for form security. Security posture is good with HTTPS enforced and no visible sensitive data exposure, though DNSSEC is not enabled and security headers are not explicitly detected. Privacy compliance is supported by a clear privacy policy and terms of service, but lacks a visible cookie consent mechanism. Business credibility is strong with consistent WHOIS data and transparent company information. Overall, the website is professional, secure, and trustworthy, with room for improvement in security headers and cookie consent.

Scanned

NIS2 and GDPR posture

GDPR outside view
58/ 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

6 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 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 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 trinket.io

This scan found 25 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
42
Security headers
35
Email security
75
DNS health
75
Network security
100
GDPR outside view
58
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

Trinket operates a freemium SaaS business model focused on educational coding tools accessible via web browsers. Its competitive advantage lies in ease of use, no installation requirement, and integration with educational resources like tutorials and textbooks. Revenue streams likely include premium subscriptions for individuals and schools. The target market includes learners and educators globally, with a strong US presence. Partnerships with sites like hourofpython.com and books.trinket.io enhance its educational ecosystem. The company maintains a consistent brand and professional online presence, supported by social media channels and Google Analytics for user insights. Growth indicators include active resource offerings and premium plan marketing. Strategic observations suggest focusing on expanding premium offerings and enhancing security and privacy features to maintain trust.

Security posture

Trinket demonstrates a mature security posture with HTTPS enforced site-wide and Google reCAPTCHA protecting user input forms. No exposed sensitive data or vulnerable libraries were detected in the HTML content. However, the absence of DNSSEC and missing security headers such as Content-Security-Policy and X-Frame-Options represent areas for improvement. There is no publicly disclosed security policy or incident response contact information, which could be enhanced to improve transparency and readiness. Privacy compliance is supported by a comprehensive privacy policy and terms of service, but the lack of a cookie consent banner may be a compliance gap under GDPR. Overall, the security posture is good but could benefit from implementing additional security headers and explicit incident response information.

Recommendations

  1. Enable DNSSEC on the domain to strengthen DNS security and prevent spoofing.
  2. Implement standard security headers including Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options to mitigate common web vulnerabilities.
  3. Add a visible cookie consent mechanism to comply fully with GDPR and other privacy regulations.
  4. Publish a dedicated security policy and incident response contact information to improve transparency and user trust.
  5. Regularly audit and update third-party libraries to avoid vulnerabilities and maintain security hygiene.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Trinket
Description
Trinket is an online platform that enables users to write, run, and share code in any browser and on any device without installation. It offers free and premium plans focused on learners and educators, providing interactive coding resources, tutorials, and textbooks.
Key services
Online code editor and runner, Interactive coding tutorials, Educational resources and textbooks, Premium plans for individuals and schools
Content quality
good
Branding
consistent

Technology

Stack
AngularJS 1.3.20, jQuery 2.2.4, Lodash 2.4.1, Video.js 5.20.4, Highlight.js, Ace Editor, Google reCAPTCHA, Foundation CSS framework, Moment.js, MathJax
Frameworks
AngularJS, Foundation
Platforms
Web
Performance
moderate
Mobile
good
Accessibility
basic
SEO
basic

Security

Observed score
70/100
Good practices seen
  • HTTPS enforced
  • Google reCAPTCHA on forms
  • No exposed sensitive data in HTML
  • Use of modern JS libraries

Analytics and tracking

Services
Google Analytics
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Google Analytics (via gtag.js)
Marketing tools
Google reCAPTCHA
Transparency
basic

Site quality

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

Key observations

  1. Website is fully accessible with no blocking or WAF challenges.
  2. Content is focused on educational coding tools and resources.
  3. Use of modern web technologies and frameworks.
  4. Good integration of security features like HTTPS and reCAPTCHA.
  5. Lack of explicit cookie consent mechanism detected.
  6. WHOIS data is transparent and consistent with business claims.
  7. No direct company contact emails or phone numbers found; contact via forms only.
  8. Social media presence on Twitter, Facebook, LinkedIn.
Technical notes

Notes

The website uses a combination of AngularJS 1.3.20, jQuery 2.2.4, Lodash, Ace Editor, and other JavaScript libraries to provide an interactive coding environment. Hosting is supported by Cloudflare DNS and CDN services, enhancing performance and security. The site is mobile-optimized and uses Foundation CSS framework for responsive design. Performance is moderate, with lazy loading implemented for some content. SEO and accessibility features are basic but present. The technology stack is somewhat dated (AngularJS 1.x) but functional. There is opportunity to modernize the frontend framework and improve accessibility and SEO for better user experience and search ranking.
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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