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Security report for op3.dev

OP3: The Open Podcast Prefix Project · Technology · N/a

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

Security score

60/100

Risk levelMedium

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

OP3: The Open Podcast Prefix Project is a small, independent, open-source podcast analytics service focused on providing free, privacy-respecting podcast download metrics. It enables podcasters and hosting companies to prepend a prefix to episode URLs to measure downloads without compromising listener privacy. The project is supported by sponsors from the podcast industry and offers public stats pages and an open API for data access. Technically, the website uses modern technologies including Tailwind CSS, Shoelace web components, and Cloudflare CDN and analytics, delivering a fast, mobile-optimized, and accessible user experience. Security posture is strong with HTTPS, security headers, and open-source transparency, though it lacks explicit incident response and vulnerability disclosure policies. Overall, OP3 presents a trustworthy and professional service with a clear focus on privacy and open data.

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

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 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';…

  3. 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

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

Keep watching op3.dev

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.

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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
75
Security headers
15
Email security
40
DNS health
75
Network security
100
GDPR outside view
53
Average
60

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

OP3 occupies a niche market segment in podcast analytics emphasizing open data and listener privacy. Its open-source model and sponsor-supported funding differentiate it from commercial analytics providers. The business targets podcasters, hosting companies, and app developers seeking transparent and privacy-conscious analytics. The presence of multiple reputable podcast industry partners and sponsors indicates a strong ecosystem and community support. The business model relies on openness, transparency, and community trust rather than monetization through user data. Growth indicators include over 20 million downloads measured monthly and more than 3200 shows tracked. Strategic partnerships with podcast hosting and advertising platforms enhance market reach and credibility.

Security posture

The website demonstrates a mature security posture with enforced HTTPS, comprehensive security headers, and no visible vulnerabilities or exposed sensitive data. The open-source nature allows for community auditing, enhancing trust. However, the absence of a published security policy, incident response contact, or vulnerability disclosure program represents a gap in formal security governance. Minimal user tracking via Cloudflare Web Analytics aligns with privacy commitments. No forms on the homepage reduce attack surface. Overall, the security maturity is high for a small independent project but could be improved with formalized policies and disclosure mechanisms.

Recommendations

  1. Implement a cookie consent banner or mechanism to comply with cookie laws and enhance privacy compliance.
  2. Publish a dedicated security policy and incident response contact information to improve transparency and trust.
  3. Establish and publish a vulnerability disclosure policy or security.txt file to encourage responsible reporting of security issues.
  4. Consider adding more comprehensive contact options such as a contact form or phone number for business inquiries.
  5. Maintain and regularly update open-source codebase and dependencies to mitigate potential vulnerabilities.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
OP3: The Open Podcast Prefix Project
Description
The Open Podcast Prefix Project (OP3) is a free and open-source podcast prefix analytics service committed to open data and listener privacy. It enables podcasters and hosting companies to prepend a prefix to podcast episode URLs to measure downloads without compromising listener privacy. OP3 provides free public stats pages with detailed podcast download metrics and spreadsheet exports.
Key services
Podcast prefix analytics, Public podcast download statistics pages, Open API for podcast download data
Content quality
excellent
Branding
consistent

Technology

Stack
Tailwind CSS, Shoelace Web Components, Cloudflare CDN, Cloudflare Web Analytics
Frameworks
Tailwind CSS
Platforms
Cloudflare
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
90/100
Good practices seen
  • HTTPS enforced
  • No exposed sensitive data
  • Open-source code for audit
  • No third-party IP address databases used

Analytics and tracking

Services
Cloudflare Web Analytics
Tracking level
minimal
Privacy practices
good

Advertising

Tracking pixels
Cloudflare Web Analytics
Transparency
good

Site quality

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

Key observations

  1. Website is a niche open-source podcast analytics service focused on privacy and open data.
  2. Content is well-structured, professionally designed, and mobile-optimized.
  3. No forms collecting personal data on the homepage; minimal tracking via Cloudflare Analytics.
  4. Strong emphasis on transparency with open-source code and public uptime monitoring.
  5. Multiple reputable podcast industry partners and sponsors are linked.
  6. No cookie consent mechanism detected, which may be a compliance gap.
  7. No explicit security or incident response contact information found.
  8. No vulnerability disclosure or security.txt file detected.
Technical notes

Notes

The website is built with modern, lightweight technologies including Tailwind CSS for styling and Shoelace web components for UI elements, ensuring a responsive and accessible design. Hosting on Cloudflare provides global CDN distribution and fast performance. The site uses minimal external scripts, primarily Cloudflare Web Analytics for privacy-respecting analytics. The HTML is well-structured with semantic elements and meta tags supporting SEO. No CMS detected, indicating a custom or static site approach. The technical implementation is clean, performant, and aligns with best practices for small to medium web projects. Opportunities include adding structured data (JSON-LD) for enhanced SEO and accessibility improvements.
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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