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Security report for sbcl.org

Steel Bank Common Lisp · Technology · Portugal

Medium risk. 9 critical or high findings in Security headers, GDPR outside view and 2 other checks.

Security score

55/100

Risk levelMedium

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

Steel Bank Common Lisp (SBCL) is an established open source project providing a high performance Common Lisp compiler and runtime system. The website serves primarily as an informational and resource hub for developers interested in SBCL, offering downloads, documentation, and bug reporting channels. The project is well-positioned in the niche market of Lisp programming languages with a long history dating back to 2003. The technical infrastructure is simple, relying on basic HTML and CSS, hosted on SourceForge, with no advanced CMS or analytics tools detected. The site is functional but lacks modern enhancements such as privacy policies, cookie consent mechanisms, and security headers. Security posture is moderate with domain registration protections but missing DNSSEC and HTTP security headers. Overall, the site is trustworthy and safe, with no adult or questionable content.

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

9 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 sbcl.org

This scan found 28 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
42
Security headers
15
Email security
70
DNS health
55
Network security
100
GDPR outside view
50
Average
55

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 sbcl.org, from OffSeq Breach.

No leaked records found

Breach holds no records for sbcl.org right now. New leaks arrive continuously, so monitoring on Breach alerts you if that changes.

Monitor on Breach (opens in a new tab)

Technical appendix

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

Business context

Business profile

SBCL operates as a small, community-driven open source software project targeting developers and programmers interested in Common Lisp. Its business model is based on free software distribution and community contributions rather than commercial revenue. The project maintains a presence on SourceForge and Launchpad for hosting and bug tracking, indicating a collaborative ecosystem. The lack of commercial contact details or marketing suggests a focus on technical users rather than broad commercial expansion. The project benefits from a long domain age and consistent registration data, supporting credibility and stability in its niche market.

Security posture

The website demonstrates a basic security posture with HTTPS implied but no explicit security headers detected in the provided data. The domain is protected against unauthorized transfers with clientTransferProhibited status but lacks DNSSEC. No incident response or security policy information is published, which is common for open source projects but represents a compliance gap. No vulnerabilities or exposed sensitive data were found in the content. The absence of privacy and cookie policies indicates limited GDPR compliance. Overall, security maturity is moderate but could be improved with standard web security best practices and transparency.

Recommendations

  1. Enable DNSSEC on the domain to enhance DNS security and integrity.
  2. Publish a clear privacy policy and cookie policy to improve GDPR compliance and user trust.
  3. Implement standard security headers such as Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security.
  4. Provide a security policy page including incident response contacts to improve transparency and readiness.
  5. Consider adding basic analytics with privacy-respecting configurations to better understand user engagement.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Steel Bank Common Lisp
Description
Steel Bank Common Lisp (SBCL) is a high performance Common Lisp compiler. It is open source / free software, with a permissive license. It provides a compiler and runtime system for ANSI Common Lisp, along with an interactive environment including debugger, profiler, code coverage tool, and other extensions. SBCL supports multiple platforms including Linux, BSDs, macOS, Solaris, and Windows.
Key services
Common Lisp compiler, Runtime system, Interactive development environment, Debugger, Profiler, Code coverage tool
Content quality
good
Branding
consistent

Technology

Stack
HTML, CSS
Platforms
Linux, BSD, macOS, Solaris, Windows
Performance
moderate
Mobile
basic
Accessibility
basic
SEO
basic

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
basic
User experience
basic
Content relevance
good
Navigation
good
Professionalism
good
Trustworthiness
high

Key observations

  1. Website is an open source project site for a Common Lisp compiler.
  2. No privacy, cookie, or terms of service policies found.
  3. Contact information limited to bug reporting email lists and bug tracker links.
  4. No phone numbers or physical addresses provided on the site.
  5. No security policy or incident response information published.
  6. No analytics or advertising scripts detected.
  7. Simple HTML/CSS site with basic navigation and content.
  8. No WAF or blocking mechanisms detected.
  9. WHOIS data consistent with project age and nature.
Technical notes

Notes

The website uses a simple, static HTML and CSS structure without modern JavaScript frameworks or CMS platforms. Hosting is via SourceForge, a common platform for open source projects. The site performance is likely moderate given the minimal content and lack of heavy scripts. Mobile optimization and accessibility are basic but functional. SEO is minimal with basic meta tags and no structured data or Open Graph tags detected. There is no evidence of technical debt or outdated libraries, but modernization opportunities exist to improve security, privacy, and user experience.
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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