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Security report for 12daysofweb.dev

Stephanie Eckles · Technology · N/a

Medium risk. 9 critical or high findings in Email security, Security headers and 2 other checks.

Security score

59/100

Risk levelMedium

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

12 Days of Web is an educational website created by Stephanie Eckles that offers a year-end series of tutorials focusing on fundamental web technologies such as HTML, CSS, and JavaScript. The site targets web developers and enthusiasts seeking to deepen their understanding of modern web development techniques. It operates as a content publishing platform with a small, focused audience and a niche market position in web education. The business model centers on providing free educational content with optional email subscriptions for daily updates during the event period. Technically, the website is built using the Eleventy static site generator, leveraging modern web standards including HTML5, CSS3, and JavaScript. It employs privacy-conscious analytics via Plausible and demonstrates excellent mobile optimization, accessibility, and SEO practices. The site is fast-loading and well-structured, reflecting a mature digital infrastructure. From a security perspective, the site enforces HTTPS and avoids exposing sensitive data. However, it lacks several recommended security headers and does not provide explicit privacy or cookie policies, which are notable compliance gaps. No vulnerabilities or suspicious content were detected, and the WHOIS data aligns well with the site’s author and purpose, indicating a trustworthy domain registration. Overall, the website presents a low-risk profile with strong content quality and technical implementation but would benefit from enhanced privacy compliance and security header implementation to improve its security posture and regulatory adherence.

Scanned

This is an earlier scan of 12daysofweb.dev. View the latest report

NIS2 and GDPR posture

GDPR outside view
35/ 100 · High
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. 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 12daysofweb.dev

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

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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
52
Security headers
30
Email security
60
DNS health
75
Network security
100
GDPR outside view
35
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

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 12daysofweb.dev, from OffSeq Breach.

No leaked records found

Breach holds no records for 12daysofweb.dev 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

The website occupies a niche in the web development education sector, offering specialized content that appeals to developers interested in fundamental web technologies. Its competitive advantage lies in the creator's reputation and the focused, high-quality content series delivered annually. Revenue streams appear limited to sponsorships and donations via GitHub Sponsors and Buy Me a Coffee, indicating a community-supported model. The target customer segment is primarily individual developers and learners. The partnership ecosystem includes related projects by the creator, enhancing brand synergy. Growth indicators include consistent annual series and active community engagement through subscriptions. Strategic observations suggest opportunities to expand monetization and formalize compliance documentation.

Security posture

The website demonstrates a moderate to high security maturity level with HTTPS enforced and no visible sensitive data exposure. However, the absence of key security headers such as Content-Security-Policy and X-Frame-Options reduces its defense-in-depth. There are no published security policies or incident response contacts, which limits transparency and preparedness. Compliance gaps exist due to missing privacy and cookie policies, potentially impacting GDPR adherence. The use of privacy-focused analytics is a positive indicator. Overall, the security culture appears informal but conscientious, with room for formalization and enhancement.

Recommendations

  1. Implement and publish a comprehensive privacy policy and cookie consent mechanism to improve GDPR compliance.
  2. Add essential security headers (Content-Security-Policy, X-Frame-Options, X-Content-Type-Options) to strengthen security posture.
  3. Publish a security policy and incident response contact information to enhance transparency and readiness.
  4. Consider adding verified contact information such as a company email address to improve business credibility.
  5. Regularly review and update third-party scripts and dependencies to mitigate potential vulnerabilities.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Stephanie Eckles
Description
A year-end celebration of fundamental web technologies: HTML, CSS, and JavaScript.
Key services
Daily web technology tutorials and articles, Email subscription for daily updates, Past series archives
Content quality
excellent
Branding
consistent

Technology

Stack
HTML5, CSS3, JavaScript, Eleventy (Static Site Generator), Plausible Analytics
Frameworks
Eleventy
Platforms
Static site hosting
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • No exposed sensitive data in HTML
  • Use of async and defer on scripts to improve performance and security

Analytics and tracking

Services
Plausible Analytics
Tracking level
minimal
Privacy practices
basic

Advertising

Tracking pixels
Plausible Analytics
Transparency
basic

Site quality

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

Key observations

  1. Website is a well-maintained educational resource for web developers.
  2. No privacy or cookie policies found, which is a compliance gap.
  3. No explicit contact emails or phone numbers found; only a subscription form is present.
  4. Use of modern static site generator Eleventy and privacy-focused analytics (Plausible).
  5. No security headers detected; opportunity for security improvements.
  6. No signs of suspicious or malicious content.
  7. Clear branding and consistent design.
  8. No advertising networks detected beyond analytics.
Technical notes

Notes

The website is built on a modern static site generator (Eleventy) with a clean, semantic HTML structure and well-organized CSS and JavaScript assets. It uses asynchronous and deferred script loading to optimize performance. The inclusion of Plausible Analytics reflects a privacy-conscious approach to user tracking. The site is mobile-optimized and accessible, with clear navigation and structured content. No technical debt or legacy technologies were detected. Hosting details are not explicit but the site performance is fast, indicating efficient infrastructure. Opportunities exist to enhance security headers and formalize compliance documentation.
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. 59/100Medium35 findingsView report
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