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Security report for lemonadejs.com

Jspreadsheet · Technology · N/a

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

Security score

68/100

Risk levelMedium

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

LemonadeJS is a small technology company offering a lightweight, dependency-free reactive JavaScript library designed for modern frontend development. The company provides a suite of reusable components and plugins that integrate with popular frameworks such as React and VueJS. Their ecosystem includes commercial and open-source products, targeting JavaScript developers seeking efficient and flexible tools. The website is well-structured, professionally designed, and provides comprehensive technical documentation and examples. The technical infrastructure leverages modern web technologies and includes analytics via Google Tag Manager and Google Analytics. Security posture is moderate with HTTPS enforced but lacks published security policies, privacy policies, and security headers. The domain is well-established with consistent WHOIS data, supporting legitimacy. Overall, the website is trustworthy but could improve privacy compliance and security transparency.

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

8 findings rated critical or high. Fix these first.

  1. Email security

    SPF, DKIM and DMARC stop others sending email that looks like it comes from your domain, a common route to phishing and invoice fraud.

    • Critical

      No email authentication configured

      Domain is vulnerable to email spoofing

      What to do: Implement SPF, DKIM, and DMARC immediately

  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';…

  3. 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

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

Keep watching lemonadejs.com

This scan found 21 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
77
Security headers
50
Email security
60
DNS health
85
Network security
100
GDPR outside view
35
Average
68

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 positions itself as a niche provider of lightweight reactive JavaScript libraries and components, serving frontend developers and software engineers. Their business model combines open-source offerings with commercial products like Jspreadsheet Pro. The target audience is technical and developer-focused, with a market position emphasizing flexibility, performance, and integration capabilities. The company maintains partnerships or related products under domains such as jspreadsheet.com and intrasheets.com, indicating a broader ecosystem. Growth indicators include weekly download statistics and GitHub stars. The company appears to be small-sized with a focused product portfolio and a consistent branding strategy.

Security posture

The website demonstrates a basic to moderate security maturity level. HTTPS is used consistently, and no sensitive data is exposed in the HTML content. However, the absence of security headers such as Content-Security-Policy and Strict-Transport-Security reduces the overall security posture. There are no published privacy or cookie policies, nor incident response or security contact information, which are gaps in compliance and transparency. The use of third-party analytics and tag management is standard but requires clear privacy disclosures. No vulnerabilities or suspicious patterns were detected in the content or WHOIS data. The domain registration is transparent and consistent with the business claims.

Recommendations

  1. Publish a comprehensive privacy policy and cookie policy with explicit user consent mechanisms to improve GDPR compliance.
  2. Implement security headers including Content-Security-Policy, X-Content-Type-Options, X-Frame-Options, and Strict-Transport-Security to enhance site security.
  3. Provide clear contact information for security incidents and designate a Data Protection Officer or privacy contact.
  4. Enable DNSSEC on the domain to improve DNS security and prevent spoofing.
  5. Regularly audit and update third-party libraries and dependencies to mitigate potential vulnerabilities.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Jspreadsheet
Description
LemonadeJS is a lightweight vanilla javascript reactive micro library (7Kb) that helps the integration between the JavaScript and the HTML. It is a dependency-free lightweight library featuring an abstract reactive layer and two-way data binding. It enables the creation of modern platform-agnostic components using pure JavaScript, JSX, or TypeScript. LemonadeJS supports integration with popular front-end frameworks like Vue, React, and Angular. The ecosystem includes components such as data grid, modal, calendar, dropdown, and others. The website also promotes related JavaScript products like Jspreadsheet Pro, Intrasheets, Jsuites, Jspreadsheet CE, and OpenETL.
Key services
Reactive JavaScript library, Two-way data binding, Reusable UI components (data grid, modal, calendar, dropdown, etc.), Integration with popular frameworks, Commercial spreadsheet component (Jspreadsheet Pro), Open-source plugins and tools
Content quality
good
Branding
consistent

Technology

Stack
JavaScript, TypeScript, JSX, HTML5, CSS3, Google Fonts, Google Tag Manager, Google Analytics (gtag.js), Faker.js, Highlight.js, CodeMirror, Babel (standalone), Jsuites
Frameworks
LemonadeJS, React, VueJS
Platforms
Web browsers
Performance
fast
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
70/100
Good practices seen
  • HTTPS enforced (implied by canonical URL and external scripts loaded via HTTPS)
  • No exposed sensitive data in HTML content
  • Use of Google Tag Manager and Google Analytics with asynchronous loading

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 a technical documentation and marketing site for LemonadeJS, a lightweight reactive JavaScript library.
  2. No privacy, cookie, or terms of service policies are found on the site.
  3. No explicit contact emails or phone numbers are provided on the website.
  4. The site uses modern JavaScript libraries and frameworks and integrates with Google Analytics and Tag Manager.
  5. The domain is well-established and not privacy protected, indicating legitimacy.
  6. No security headers detected in the provided data; potential area for improvement.
  7. No security or incident response policies are published.
  8. The site promotes related commercial and open-source JavaScript products.
  9. No adult or questionable content detected; content is safe for general audiences.
Technical notes

Notes

The website uses a modern and diverse technology stack including LemonadeJS, React, VueJS, Babel, CodeMirror, and various LemonadeJS plugins. It loads resources asynchronously and uses CDNs for performance optimization. The site is mobile-optimized and accessible with good SEO practices including meta tags and structured data (JSON-LD). The domain is stable and hosted with reputable providers. Performance is fast with minimal blocking scripts. Technical debt appears low, but the absence of some security headers and privacy policies indicates areas for modernization and compliance improvement.
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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