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Security report for astrid.tech

Astrid Yu · Technology · Iceland

Medium risk. 7 critical or high findings in Security headers and GDPR outside view.

Security score

60/100

Risk levelMedium

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

Astrid.tech is a personal technology blog and project showcase website maintained by Astrid Yu. The site focuses on topics such as networking, homelab setups, programming languages, and various tech projects. It is a niche site targeting technology enthusiasts and readers interested in detailed technical content. The website is built using a custom Rust-based static site generator CMS called Seams and hosts static assets on Backblaze B2. The site is fast, mobile-optimized, and uses modern web technologies including JavaScript and CSS. Google Analytics is employed for visitor tracking, but no visible cookie consent mechanism is present. Security posture is moderate with HTTPS enabled and no exposed sensitive data, but lacks security headers and formal security policies. The domain is privacy protected, registered in 2020, which aligns with the site's personal nature and recent content updates. Overall, the site is trustworthy and professional but would benefit from improved privacy compliance and security best practices.

Scanned

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

7 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 astrid.tech

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

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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
15
Email security
60
DNS health
65
Network security
100
GDPR outside view
35
Average
60

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 operates as a personal blog and technology project portfolio without formal business operations or commercial transactions. It targets a small audience of technology enthusiasts and hobbyists. The business model is non-commercial, focusing on content sharing and community engagement through blog posts and tools like the Pegging Engine. The site maintains a consistent update schedule and leverages open source technologies, indicating a strong technical foundation. There are no visible partnerships or subsidiaries. The use of privacy protection for domain registration is typical for personal sites. The site’s market position is niche and personal, with no direct competitors or commercial ambitions evident.

Security posture

The security maturity level of astrid.tech is moderate. HTTPS is properly implemented ensuring encrypted communications. However, the absence of security headers such as Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security reduces the overall security posture. No vulnerabilities or exposed sensitive data were detected in the HTML content. The site lacks formal security policies, incident response contacts, and vulnerability disclosure mechanisms such as security.txt. Google Analytics is used without visible cookie consent, which may pose privacy compliance risks under GDPR. The domain uses privacy protection, which is appropriate for a personal site. Overall, the site is secure for its purpose but could improve by adopting additional security best practices and compliance measures.

Recommendations

  1. Enable DNSSEC on the domain to enhance DNS security and prevent spoofing.
  2. Implement and publish a privacy policy and cookie policy with a user consent mechanism.
  3. Add essential security headers including Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security.
  4. Provide clear contact information for security incidents and consider publishing a security.txt file.
  5. Review and ensure compliance with GDPR and other relevant privacy regulations, especially regarding analytics tracking.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Astrid Yu
Description
Astrid's personal website
Key services
blog posts on technology and networking, project showcases, tools such as Pegging Engine
Content quality
good
Branding
moderate

Technology

Stack
Rust (static site generator), JavaScript, CSS, Google Analytics (gtag.js)
Performance
fast
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
75/100
Good practices seen
  • HTTPS enabled
  • No exposed sensitive data in HTML
  • No vulnerable libraries detected

Analytics and tracking

Services
Google Analytics (gtag.js)
Tracking level
moderate
Privacy practices
poor

Advertising

Transparency
basic

Site quality

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

Key observations

  1. Website is a personal technology blog with regular updates and project showcases.
  2. No formal business contact information or policies found.
  3. Uses a custom Rust-based static site generator CMS.
  4. No privacy or cookie policies present, which is a compliance gap.
  5. No security.txt or vulnerability disclosure information available.
  6. No security headers detected in HTML content.
  7. Google Analytics is used for tracking without visible consent mechanism.
  8. Domain uses privacy protection service, common for personal sites.
  9. Site is mobile optimized and fast loading.
  10. Content is safe and suitable for general audiences.
Technical notes

Notes

The website is built using a modern, custom Rust-based static site generator (Seams), which contributes to fast loading times and good performance. Static assets are hosted on Backblaze B2, a reliable cloud storage provider. The site uses standard web technologies including CSS and JavaScript, with Google Analytics integrated for visitor tracking. The HTML is valid and SEO optimized with proper meta tags and Open Graph data. Mobile optimization is good, providing a responsive user experience. There is no evidence of technical debt or legacy technologies. However, the lack of security headers and privacy policies indicates areas for modernization and compliance improvements. Overall, the technical infrastructure is solid and well-suited for a personal blog and project site.
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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