Skip to main content

Security report for tcl.tk

Tcl Developer Xchange · Technology · N/a

Medium risk. 8 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

59/100

Risk levelMedium

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

The Tcl Developer Xchange website serves as the primary hub for the Tcl programming language and Tk GUI toolkit community. It provides software downloads, documentation, community resources, and core development information. The site targets software developers interested in Tcl/Tk technologies and is hosted by ActiveState, a reputable company known for commercial support of Tcl. The website content is technical, mature, and well-structured, though the design is basic and mobile optimization is limited. From a technical perspective, the site uses standard HTML and CSS with Google Site Search integration and Cloudflare Insights for analytics. Hosting by ActiveState suggests reliable infrastructure, but the site lacks visible modern security headers and explicit HTTPS confirmation in the provided data. Privacy and cookie policies are absent, which impacts compliance and user trust. Security posture is moderate but could be improved by implementing HTTPS, security headers, and publishing privacy-related policies. The WHOIS data is incomplete and malformed, which reduces domain registration trustworthiness, though the website content and hosting provider indicate legitimacy. No adult or questionable content is present, making the site safe for general audiences. Overall, the site is functional and credible within its niche but would benefit from enhanced security practices, privacy compliance, and improved technical modernization to strengthen trust and user experience.

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

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 tcl.tk

This scan found 26 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

€25per month

  • TLS certificates and expiry
  • DNS records
  • SPF, DKIM and DMARC
  • Security headers
  • GDPR and NIS2 posture
  • Exposed services
  • Third-party trackers
  • Security score drift

Email alerts on material changes and an exportable JSON history of every change.

Billed monthly to your card. Cancel anytime. See sample alerts.

Full report

€39.90one-time

  • The complete analysis as a PDF you can cite
  • Email delivery with an unlock code
  • Lifetime access to this report

Prices incl. 21% VAT. Secure checkout by Mollie; sold by SEQ SIA, Latvia.

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
47
Security headers
15
Email security
70
DNS health
70
Network security
100
GDPR outside view
50
Average
59

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 represents an open source community-driven project with commercial support partnerships, primarily ActiveState. It occupies a niche in the programming language ecosystem with a mature user base of developers. The business model is focused on community engagement, software distribution, and fostering core development. Revenue streams likely include commercial support and tooling via partners. The site demonstrates consistent branding and trust signals such as conference announcements and official core team links. However, the lack of detailed business registration or contact information limits transparency. The partnership ecosystem includes ActiveState and related Tcl distributions. Growth indicators include ongoing software releases and community events.

Security posture

The current security maturity level is moderate with no visible critical vulnerabilities in the content. However, the absence of HTTPS confirmation, security headers, and privacy policies indicates gaps in best practices. There is no evidence of incident response readiness or published security contacts. Data protection practices are minimal, and GDPR compliance is not demonstrated. The use of Cloudflare Insights for analytics is minimal tracking but lacks transparency. Overall, the security culture appears informal and community-driven rather than enterprise-grade. Improvements in secure communications, policy publication, and incident response would enhance posture.

Recommendations

  1. Implement HTTPS with a valid TLS certificate and enforce secure connections site-wide.
  2. Add standard security headers such as Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security.
  3. Publish comprehensive privacy and cookie policies to improve GDPR compliance and user trust.
  4. Provide clear security incident response contacts and consider a vulnerability disclosure policy.
  5. Enhance mobile responsiveness and accessibility to improve user experience and compliance.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Tcl Developer Xchange
Description
Tcl is a powerful, easy to learn dynamic programming language suitable for a wide range of uses including web, desktop applications, networking, administration, and testing. Tk is a GUI toolkit for developing cross-platform native applications. The site serves as the main developer resource for Tcl/Tk.
Key services
Providing Tcl/Tk software downloads, Community resources and documentation, Core development coordination, Conference and event information
Content quality
good
Branding
consistent

Technology

Stack
HTML5, CSS, Google Site Search, Cloudflare Insights script
Performance
moderate
Mobile
basic
Accessibility
basic
SEO
basic

Security

Observed score
40/100

Analytics and tracking

Services
Cloudflare Insights
Tracking level
minimal
Privacy practices
poor

Advertising

Tracking pixels
Cloudflare Insights
Transparency
basic

Site quality

Design
basic
User experience
basic
Content relevance
good
Navigation
good
Professionalism
good
Trustworthiness
moderate

Key observations

  1. Website is accessible with no blocking or WAF challenge.
  2. WHOIS data is unavailable or malformed, limiting domain trust analysis.
  3. No privacy, cookie, or terms of service policies found on the site.
  4. Contact information limited to a webmaster email address only.
  5. Site is hosted by a reputable company (ActiveState).
  6. Content is technical and targeted at developers.
  7. No security headers or HTTPS status visible from provided data.
  8. Minimal tracking via Cloudflare Insights beacon.
  9. No signs of adult or questionable content.
Technical notes

Notes

The website uses a simple, static HTML/CSS structure with Google Site Search integration and Cloudflare Insights for analytics. Hosting by ActiveState suggests stable infrastructure. The site lacks modern web frameworks or CMS, indicating low technical complexity but also potential technical debt. Performance is moderate with basic mobile optimization and accessibility. SEO is basic with minimal meta tags. There is opportunity to modernize the tech stack, improve performance, and adopt accessibility standards to reduce risks and improve engagement.
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

Reviews of this site

Share your experience with tcl.tk. Every review is verified by email and published after moderation.

Overall rating
Select a rating
4000 characters remaining

We’ll email you to confirm your review and keep your details private.

Community rating

No published reviews yet. Be the first to review tcl.tk.

Feedback on this report

Rate this report, add an optional comment, and tell us if you want a security specialist to follow up.

Overall report quality
Select a rating
2000 characters remaining

We only use your feedback to improve Guard reports. Contact details are never shared.