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Security report for castos.com

Castos · Technology · N/a

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

Security score

78/100

Risk levelLow

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

Castos is a mature technology company specializing in podcast hosting and monetization services, targeting growth-minded podcast creators and brands. The company offers a comprehensive SaaS platform with features including private podcasting, dynamic ads, analytics, and commerce capabilities. The website demonstrates a professional design with consistent branding and clear navigation, supported by structured data and SEO best practices. Technically, the site is built on WordPress with a modern tech stack and integrates multiple marketing and analytics tools, ensuring good performance and mobile optimization. Security posture is solid with HTTPS and domain registration transparency, though DNSSEC is not enabled and security headers are not evident. Privacy compliance is basic, lacking explicit privacy and cookie policies or consent mechanisms. Overall, the site is trustworthy and well-positioned in the podcast hosting market.

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

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 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 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 castos.com

This scan found 16 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
70
Email security
85
DNS health
85
Network security
100
GDPR outside view
53
Average
78

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

Breach exposure

Leaked credentials and lookalike domains from OffSeq Breach. The counts are free; the detailed lists are paid add-ons.

Dark web exposure

Add-on

Leaked records that mention castos.com, from OffSeq Breach.

Total records
626
Employees
0
Customers
626
Third parties
0
Weak passwords
8%

3 subdomains affected

See the 10 newest leaked credentials

A one-off add-on to this report that lists the most recent identifier and password pairs OffSeq Breach holds for castos.com.

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Breach keeps ingesting new leaks, so these numbers can grow between scans.

Technical appendix

Business context, site observations and technical notes gathered during the scan, and the standards behind each reference.

Business context

Business profile

Castos operates in the technology sector, focusing on podcast hosting and monetization. Its business model is SaaS-based, providing tools for podcast distribution, audience growth, and revenue generation. The company has been established since 2002, indicating stability and experience. Key services include hosting, private podcasting, mobile apps, enterprise solutions, and podcast commerce. The platform integrates with WordPress and offers additional services like podcast editing and launch assistance. Castos maintains an active social media presence and uses advanced marketing tools, suggesting a growth-oriented strategy. The lack of explicit contact details and privacy policies on the main page may be areas for improvement in customer trust and compliance.

Security posture

The website employs HTTPS and uses Cloudflare DNS, which enhances security and performance. The domain status clientTransferProhibited adds protection against unauthorized transfers. However, DNSSEC is not enabled, which is a recommended security enhancement to prevent DNS spoofing. No security headers were detected in the provided content, indicating potential gaps in defense-in-depth. There is no visible security policy, incident response information, or vulnerability disclosure, which are important for transparency and trust. The site integrates multiple third-party analytics and marketing scripts, which require careful management to avoid privacy risks. Overall, the security posture is moderate but could be improved by implementing DNSSEC, security headers, and publishing security policies.

Recommendations

  1. Enable DNSSEC to strengthen DNS security and prevent spoofing attacks.
  2. Implement and configure security headers such as Content Security Policy (CSP), Strict-Transport-Security (HSTS), X-Frame-Options, and X-Content-Type-Options.
  3. Publish comprehensive privacy and cookie policies with clear GDPR compliance statements and implement a cookie consent mechanism.
  4. Add a security policy page and provide incident response contact information to improve transparency and trust.
  5. Regularly audit third-party scripts and tracking tools to ensure privacy compliance and minimize user tracking.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Castos
Description
Castos is the podcast hosting platform for growth minded brands. We give you all the tools to grow your audience and monetize your content.
Key services
Podcast Hosting, Private Podcasting, Mobile App, Hybrid Podcasting, WordPress Plugin, Enterprise Solutions, Dynamic Ads, Podcast Analytics, YouTube Republishing, Podcast Editing Services
Content quality
good
Branding
consistent

Technology

Stack
WordPress, Yoast SEO, Cloudflare DNS, Google Analytics, Google Tag Manager, Facebook Pixel, LinkedIn Insight Tag, Drip Marketing, Visual Website Optimizer (VWO), jQuery, Perfmatters (performance optimization), GeneratePress Theme, Kadence Blocks, Novashare Social Sharing, Castos Shortcodes Plugin, Docu Plugin
Frameworks
WordPress
Platforms
WordPress CMS
Performance
fast
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
75/100
Good practices seen
  • HTTPS enabled
  • ClientTransferProhibited domain status
  • Use of Cloudflare DNS

Analytics and tracking

Services
Google Analytics, Google Tag Manager, Facebook Pixel, LinkedIn Insight Tag, Visual Website Optimizer, Drip
Tracking level
moderate
Privacy practices
basic

Advertising

Ad networks
Castos Ads
Tracking pixels
Facebook Pixel, LinkedIn Insight Tag, Drip
Marketing tools
Visual Website Optimizer, Drip
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 podcast hosting and monetization services.
  3. No explicit privacy, cookie, or terms of service pages detected in the provided content.
  4. Multiple marketing and analytics tools are integrated.
  5. No direct contact emails or phone numbers found in the provided HTML snippet.
  6. Strong use of structured data and SEO best practices.
  7. No security.txt or vulnerability disclosure found.
  8. DNSSEC is not enabled, which is a minor security gap.
Technical notes

Notes

The website is built on WordPress using the GeneratePress theme and several plugins including Yoast SEO, Novashare, Castos Shortcodes, and Docu. It leverages Cloudflare for DNS and uses Google Analytics, Google Tag Manager, Facebook Pixel, LinkedIn Insight Tag, Drip marketing, and Visual Website Optimizer for analytics and marketing. The site is optimized for performance with lazy loading and font optimizations. Mobile responsiveness and SEO are well addressed. However, accessibility features appear basic and could be enhanced. The absence of DNSSEC and security headers represents technical debt in security. Overall, the technical infrastructure is modern and performant but has room for security and privacy 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

Earlier scans of this domain

  1. 77/100Low25 findingsView report
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