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Security report for opus-codec.org

Xiph.org Foundation · Technology · Canada

Medium risk. 7 critical or high findings in Email security, Security headers and 1 other check.

Security score

53/100

Risk levelMedium

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

The Opus Codec website represents the Xiph.org Foundation's open standard audio codec project, providing royalty-free, high-quality audio codec technology standardized by the IETF. The site targets developers and multimedia technology users, offering downloads, documentation, and development resources. The business model centers on open source technology dissemination and community engagement, positioning Opus as a leading codec in interactive audio transmission and streaming. Technically, the website is built with standard HTML5 and CSS, featuring responsive design and syntax highlighting for code examples. It lacks a CMS and advanced frameworks but maintains good mobile optimization and SEO practices. Performance is moderate with no detected analytics or tracking, reflecting a privacy-conscious approach. Security posture is moderate; the domain is protected with clientTransferProhibited status but lacks DNSSEC and security headers. No privacy or cookie policies are published, indicating compliance gaps. No incident response or vulnerability disclosure information is available. The WHOIS data is consistent and supports the legitimacy of the domain and organization. Overall, the website is professional, trustworthy, and content-rich but would benefit from enhanced security practices and privacy compliance to improve user trust and regulatory adherence.

Scanned

NIS2 and GDPR posture

GDPR outside view
50/ 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

7 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 opus-codec.org

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

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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
85
Security headers
30
Email security
40
DNS health
70
Network security
40
GDPR outside view
50
Average
53

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

Opus Codec is positioned as a key player in open source audio codec technology, leveraging IETF standardization and a strong developer community. Its competitive advantage lies in royalty-free licensing and versatile codec capabilities for speech and music. The business model is non-commercial, focusing on technology dissemination rather than direct revenue. Target customers include developers, VoIP providers, and streaming services. The project shows active development with recent releases and a transparent partnership with Xiph.org Foundation. Growth is organic through community adoption and open standards advocacy.

Security posture

The website demonstrates a basic to moderate security maturity level. Domain registration protections are in place, but DNSSEC is not enabled. No security headers or HTTPS enforcement details are visible, and no published security or incident response policies exist. The absence of privacy and cookie policies indicates compliance gaps with GDPR and similar regulations. No vulnerability disclosure or security.txt files are found, limiting transparency for security researchers. Overall, the security posture is adequate for an informational site but should be improved to meet modern best practices and regulatory requirements.

Recommendations

  1. Enable DNSSEC to enhance domain name system security.
  2. Implement and publish a comprehensive privacy policy and cookie consent mechanism to improve GDPR compliance.
  3. Add standard security headers such as Content-Security-Policy, Strict-Transport-Security, and X-Frame-Options.
  4. Publish a vulnerability disclosure policy or security.txt file to facilitate responsible reporting.
  5. Ensure HTTPS is enforced site-wide and clearly indicated to users.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Xiph.org Foundation
Description
Opus is a totally open, royalty-free, highly versatile audio codec standardized by IETF as RFC 6716, designed for interactive speech and music transmission over the Internet, storage, and streaming applications.
Key services
Audio codec technology development, Open source codec downloads, Documentation and presentations, Development resources and examples
Content quality
good
Branding
consistent

Technology

Stack
HTML5, CSS3, Responsive design, Syntax highlighting CSS
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
60/100
Good practices seen
  • Domain status clientTransferProhibited

Analytics and tracking

Tracking level
minimal
Privacy practices
poor

Advertising

Transparency
poor

Site quality

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

Key observations

  1. Website is fully accessible with rich technical content.
  2. No privacy or cookie policies found, indicating potential compliance gaps.
  3. No explicit security or incident response policies published.
  4. No contact emails or phone numbers explicitly listed on the main page; contact form exists.
  5. No analytics or tracking scripts detected, indicating privacy-conscious approach.
  6. Website uses Creative Commons licensing for content.
  7. No advertising or marketing tools detected.
  8. WHOIS data is transparent and consistent with the organization.
Technical notes

Notes

The website uses a simple, clean technical stack with HTML5 and CSS, including responsive design and syntax highlighting for code. No CMS or JavaScript frameworks are detected, reducing complexity and attack surface. The site performance is moderate, with good mobile optimization and basic accessibility features. SEO is supported by meta tags and structured navigation. However, the lack of modern security headers and absence of analytics or marketing tools suggest a minimalistic approach focused on content delivery rather than user tracking or monetization.
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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