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Security report for validatejavascript.com

CircleCell · Technology · N/a

Medium risk. 4 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

66/100

Risk levelMedium

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

ValidateJavaScript.com is a specialized online tool designed to help JavaScript and React.js developers identify and fix code errors through linting and validation. The website is maintained by CircleCell and leverages the open-source ESLint utility, providing a free, accessible service to its target audience of software developers. The business operates in the technology sector with a focus on developer productivity tools and code quality enhancement. The site is modest in scale, with a clear focus on its niche utility function. Technically, the website employs a modern JavaScript stack with ESLint integration and supports JSX syntax validation. It uses Cloudflare for DNS and hosting infrastructure, Google Analytics and Tag Manager for user tracking, and BuySellAds for monetization through advertising. The site is mobile-optimized, SEO-friendly, and provides a user-friendly interface for code input and error detection. However, it lacks a CMS and advanced accessibility features. From a security perspective, the site enforces HTTPS and has domain transfer protections in place. However, it lacks several security best practices such as DNSSEC, security headers, and explicit security or incident response policies. Privacy compliance is basic, with a cookie consent banner and a privacy policy present but no GDPR-specific statements or detailed data retention policies. No contact information or incident response channels are provided, which limits transparency and user trust. Overall, the website presents a moderate security posture and good business credibility for its niche. It is a functional and useful tool for developers but would benefit from enhanced security measures, clearer compliance documentation, and improved transparency regarding contact and incident response. These improvements would strengthen trust and reduce potential risks associated with user data and site integrity.

Scanned

NIS2 and GDPR posture

GDPR outside view
68/ 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

4 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 Cookie Policy found

      GDPR requires clear information about cookie usage

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

  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 SSL Key Length

      SSL certificate uses 256-bit key, which is considered weak

      What to do: Use at least 2048-bit RSA or 256-bit ECC key

      • CWE-326
      • OWASP A04:2025
      • Mozilla TLS: Mozilla Server Side TLS 6.0 intermediate: rsa_key_size 2048

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

Keep watching validatejavascript.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

€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. See sample alerts.

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
65
Security headers
25
Email security
70
DNS health
70
Network security
100
GDPR outside view
68
Average
66

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

ValidateJavaScript.com occupies a niche market as a free online JavaScript and JSX linting tool, leveraging the popular ESLint framework. Its competitive advantage lies in ease of use and integration of automatic fixing features. The business model appears ad-supported, with BuySellAds integrated for revenue generation. The target customers are primarily developers and software engineers seeking to improve code quality and reduce debugging time. The presence of a GitHub repository indicates openness and community engagement. Growth potential is moderate, dependent on continued relevance of JavaScript and React.js in development. The partnership ecosystem includes advertising networks and analytics providers but no direct business partners or subsidiaries are identified.

Security posture

The security maturity of ValidateJavaScript.com is moderate. HTTPS is enforced, and domain registration is transparent and consistent with the business timeline. However, the absence of DNSSEC, security headers, and explicit security policies indicates room for improvement. No vulnerabilities or exposed sensitive data were detected in the analysis. The lack of incident response contact information and security framework references limits the site's preparedness for security incidents. Privacy compliance is basic, with cookie consent implemented but no detailed GDPR or data protection officer information. Overall, the site is secure enough for its purpose but should enhance security controls and transparency to meet higher compliance and trust standards.

Recommendations

  1. Enable DNSSEC on the domain to improve DNS security and prevent spoofing.
  2. Implement standard security headers such as Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options to mitigate common web vulnerabilities.
  3. Publish a clear security policy and incident response information including dedicated contact channels for security issues.
  4. Add a Terms of Service page to clarify user rights and responsibilities.
  5. Enhance privacy compliance by including GDPR-specific statements and detailed data retention policies.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
CircleCell
Description
ValidateJavaScript is an online validating (or linting) tool that automatically finds basic errors and helps prevent potentially destructive bugs in JavaScript and JSX (React.js) code.
Key services
JavaScript and JSX code validation, Linting and error detection, Automatic fixing of JavaScript errors
Content quality
good
Branding
consistent

Technology

Stack
JavaScript, ESLint, React.js (JSX support), Google Analytics, CookieConsent2, BuySellAds
Frameworks
ESLint
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
75/100
Good practices seen
  • HTTPS enforced
  • Domain status clientTransferProhibited
  • Cookie consent banner implemented

Analytics and tracking

Services
Google Analytics, Google Tag Manager
Tracking level
moderate
Privacy practices
basic

Advertising

Ad networks
BuySellAds
Transparency
basic

Site quality

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

Key observations

  1. Website is a niche developer tool focused on JavaScript linting and validation.
  2. No contact emails or phone numbers found on the site.
  3. Privacy and cookie policies are present but basic.
  4. No Terms of Service or explicit security policies found.
  5. Uses Google Analytics and BuySellAds for analytics and advertising.
  6. No security headers detected in the HTML content.
  7. Domain is well-registered and maintained with no privacy protection.
  8. No suspicious or malicious content detected.
  9. Site is mobile optimized and has good SEO metadata.
Technical notes

Notes

The website uses a clean and modern JavaScript-based infrastructure centered around ESLint for code validation. It integrates third-party services such as Google Analytics and BuySellAds for analytics and monetization. Hosting and DNS are managed via Cloudflare, providing reliable performance and security benefits. The site is mobile responsive and SEO optimized with appropriate meta tags and Open Graph data. However, no CMS or advanced accessibility features were detected. Performance is moderate, with asynchronous loading of scripts and minimal blocking resources. Technical debt appears low, but the absence of security headers and DNSSEC are notable risks. Opportunities exist to modernize security practices and improve accessibility compliance.
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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