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Security report for 500.tools

Technology · N/a

Medium risk. 8 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

500.tools is a curated online directory showcasing the 500 best tools across various categories, primarily targeting technology enthusiasts, developers, and professionals seeking productivity and AI-powered solutions. The website offers a clean, well-structured interface with categorized listings and external links to third-party tools. It operates as a small-scale curated listing platform without extensive business information or physical presence disclosed. Technically, the site uses modern web standards including HTML5, CSS3, and JavaScript with asynchronous fetch calls for search functionality and theme management via localStorage. The site is mobile optimized and SEO friendly but lacks advanced accessibility features and security headers. Security posture is basic with HTTPS enabled but missing key headers and privacy policies, which impacts compliance and trust. The site uses Ahrefs analytics for traffic insights and includes affiliate marketing links, indicating some monetization strategy. Overall, the site is safe, professional, and functional but would benefit from enhanced security and privacy compliance measures.

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. 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"

    • 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

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

Keep watching 500.tools

This scan found 22 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.

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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
20
Email security
75
DNS health
80
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 website positions itself as a niche technology tool aggregator, focusing on curated listings rather than direct product offerings. Its business model revolves around providing value through aggregation and referral traffic, potentially monetized via affiliate programs and partnerships such as with FrogDR for domain rating monitoring. The target audience includes developers, startups, marketers, and AI enthusiasts. The lack of detailed company information and privacy policies suggests a small or individual-run operation. Growth potential lies in expanding tool categories and improving user engagement. The partnership ecosystem is limited but includes relevant service providers. Strategic observations include the need for improved compliance and security to build greater trust and credibility.

Security posture

The website demonstrates a basic security maturity level with HTTPS enabled, which is mandatory. However, it lacks important security headers such as Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options, which are recommended to mitigate common web vulnerabilities. No sensitive data exposure or vulnerable libraries were detected in the provided content. The absence of privacy and cookie policies indicates compliance gaps with GDPR and other privacy regulations. Incident response and security contact information are not provided, limiting readiness for security events. Overall, the security posture is adequate for a small informational site but requires enhancements to meet best practices and regulatory expectations.

Recommendations

  1. Implement comprehensive privacy and cookie policies to improve GDPR and privacy compliance.
  2. Add essential security headers including Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options.
  3. Provide clear terms of service and incident response contact information to enhance transparency and trust.
  4. Improve accessibility features to support a wider range of users and comply with accessibility standards.
  5. Consider adding structured data (JSON-LD) to improve SEO and content discoverability.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Description
A curated list of the 500 best tools.
Key services
curated tool listings, tool submission platform
Content quality
good
Branding
consistent

Technology

Stack
HTML5, CSS3, JavaScript, Fetch API, localStorage
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
65/100
Good practices seen
  • HTTPS enabled

Analytics and tracking

Services
ahrefs analytics
Tracking level
moderate
Privacy practices
poor

Advertising

Tracking pixels
ahrefs.com
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 detected.
  2. No privacy, cookie, or terms of service policies found on the site.
  3. Contact email is provided but no phone or physical address found.
  4. The site uses HTTPS but lacks advanced security headers.
  5. The site is a curated directory of 500 tools with external links to various domains.
  6. Analytics via Ahrefs is used, indicating some tracking.
  7. No explicit or adult content detected; content is safe for general audiences.
  8. No structured data (JSON-LD) found in the HTML.
  9. No forms other than a search input and a tool submission link (which is currently full).
Technical notes

Notes

The website is built using standard web technologies including HTML5, CSS3, and JavaScript with modern asynchronous fetch API usage for dynamic content loading. It uses localStorage for theme preference management and includes external analytics from Ahrefs. The site does not appear to use a CMS or popular frameworks. Performance is moderate with no explicit indicators of slow loading but could be improved with optimization. Mobile optimization is good, and SEO meta tags are properly configured. The absence of advanced accessibility features and security headers indicates areas for technical improvement. No hosting provider or CMS was identified from the content.
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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