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Security report for robinrendle.com

Robin Rendle · Technology · United States

Partial score · DNS & email only

74/100

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

Robin Rendle's website serves as a personal professional portfolio and publishing platform for a British designer and writer based in San Francisco. The site highlights his current role at Apple and previous experience with notable tech companies, alongside his writing contributions to CSS-Tricks. The content is rich, well-structured, and targets an audience interested in design, typography, and front-end development. Technically, the site uses modern web standards with custom fonts and responsive design, hosted on a DNS provider NS1, and secured with HTTPS. However, it lacks some security headers and DNSSEC, which could be improved. The security posture is solid but could benefit from enhanced policies and disclosures. Privacy compliance is weak due to the absence of privacy and cookie policies. Overall, the site is trustworthy, professional, and well-maintained, with minor gaps in compliance and security best practices.

Scanned

3 of 7 checks could not complete. The site may be unreachable or blocking automated scans, so the results below cover only what could be checked. Try a rescan later.

NIS2 and GDPR posture

NIS2 outside view
Not assessed
GDPR outside view
Not assessed

Both readouts depend on the site's pages, which could not be loaded in this scan.

Priority findings

3 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. SSL/TLS

    TLS encrypts the connection and proves the site is really yours. Weak or expiring certificates trigger browser warnings and put traffic at risk.

    • High

      Weak Protocols Supported

      Server supports weak protocols: TLSv1.1

      What to do: Disable TLS 1.0, TLS 1.1, and all SSL versions

      • CWE-327
      • OWASP A04:2025
      • ASVS V12.1.1
    • High

      Weak SSL Key Length

      SSL certificate uses 256-bit key, which is considered weak

      What to do: Use at least 2048-bit RSA or 256-bit ECC key

      • CWE-326
      • OWASP A04:2025
      • Mozilla TLS: Mozilla Server Side TLS 6.0 intermediate: rsa_key_size 2048

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Keep watching robinrendle.com

This scan found 14 issues across 4 checks. Monitoring re-runs those checks daily, emails you when something material changes and records each fix, so you can show progress.

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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
52
Email security
60
DNS health
85
Network security
100
Average
74

Not counted

  • Security headers: did not complete in this scan.
  • GDPR outside view: did not complete in this scan.
  • 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 positions Robin Rendle as a niche personal brand in the technology and design sector, leveraging his professional background and writing expertise. The business model revolves around personal branding, content publishing, and design services. The target audience includes designers, developers, and typographers. The site demonstrates consistent branding and high content quality, with no signs of commercial advertising or affiliate marketing. The domain age and registration details support the legitimacy and longevity of the brand. There are no detected partnerships or subsidiaries linked to the domain.

Security posture

The website benefits from HTTPS and domain transfer/update protections, indicating a baseline security awareness. However, the absence of DNSSEC and security headers like Content-Security-Policy or Strict-Transport-Security reduces its defense-in-depth. No incident response or vulnerability disclosure information is provided, which limits transparency and readiness. No exposed sensitive data or vulnerabilities were detected in the HTML content. Privacy compliance is lacking, with no privacy or cookie policies, which may pose regulatory risks. Overall, the security posture is moderate with room for improvement in policy transparency and technical controls.

Recommendations

  1. Enable DNSSEC to enhance DNS security and prevent spoofing.
  2. Implement and publish a comprehensive privacy policy and cookie policy with consent mechanisms.
  3. Add security headers such as Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security.
  4. Create and publish a security.txt file to facilitate vulnerability disclosures and incident reporting.
  5. Include incident response contact information to improve transparency and trust.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Robin Rendle
Description
A British designer, writer, and typographic enthusiast based in San Francisco. Currently a designer at Apple with previous experience at Retool, Sentry, Gusto, and clients like Buttondown and XOXO. Former staff writer at CSS-Tricks focusing on front-end development and UI engineering.
Key services
Design work, Writing and publishing about front-end development and UI engineering, Newsletter and content publishing
Content quality
excellent
Branding
consistent

Technology

Stack
HTML5, CSS3, Custom fonts (woff2), RSS feeds
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
80/100
Good practices seen
  • HTTPS enforced (implied by URL https://robinrendle.com/)
  • Domain status clientTransferProhibited and clientUpdateProhibited set
  • No exposed sensitive data in HTML

Analytics and tracking

Tracking level
minimal
Privacy practices
poor

Advertising

Transparency
poor

Site quality

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

Key observations

  1. Website is a personal professional portfolio and blog of Robin Rendle, a designer and writer.
  2. Content is rich, well-structured, and professionally presented.
  3. No privacy or cookie policies found, which is a compliance gap.
  4. No security.txt or incident response information available.
  5. No analytics or tracking scripts detected in the provided HTML.
  6. No advertising or affiliate marketing detected.
  7. Contact information is limited to email and social media links.
  8. No phone numbers or physical addresses found.
  9. No explicit or adult content detected.
  10. Website uses custom fonts and modern CSS techniques.
Technical notes

Notes

The website is built with clean, modern HTML5 and CSS3, utilizing custom web fonts and responsive design techniques for excellent mobile optimization. The hosting uses NS1 DNS services, and the domain is registered with Tucows Domains Inc. The site lacks any detected CMS or JavaScript frameworks, indicating a likely static or custom-built site optimized for performance. No analytics or tracking scripts were found, suggesting minimal user tracking. The site performs well with good SEO meta tags and accessibility considerations. Technical risks include missing DNSSEC and security headers, which could be addressed to improve security posture.
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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