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Security report for elladodelmal.com

Chema Alonso · Technology · N/a

Medium risk. 7 critical or high findings in Email security, SSL/TLS and 2 other checks.

Security score

55/100

Risk levelMedium

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

The website 'Un informático en el lado del mal' is a well-established personal blog by Chema Alonso, a recognized figure in cybersecurity. It serves as a platform for sharing knowledge, tutorials, and educational content related to hacking and cybersecurity, supplemented by book publishing and educational bootcamps. The site targets security professionals, students, and enthusiasts, positioning itself as a trusted resource in the cybersecurity education niche. Technically, the site is hosted on Google's Blogger platform, uses HTTPS, and integrates Google Adsense for monetization. The content is rich, updated daily, and well-structured, though mobile optimization and accessibility are basic. Security posture is good with HTTPS and no visible vulnerabilities, but explicit security headers and privacy policies are lacking. The absence of WHOIS registration data is a notable anomaly, though the site’s longevity and external references support its legitimacy. Overall, the site demonstrates a mature digital presence with strong business credibility and a solid security baseline.

Scanned

NIS2 and GDPR posture

GDPR outside view
65/ 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

7 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.

    • Critical

      Unable to retrieve SSL certificate

      Could not establish secure connection to retrieve certificate information

      What to do: Check if the server is accessible and SSL/TLS is properly configured

  3. 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"

  4. 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

Need hands-on remediation? Email guard@offseq.com

Keep watching elladodelmal.com

This scan found 19 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
0
Security headers
50
Email security
40
DNS health
75
Network security
100
GDPR outside view
65
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

Technical appendix

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

Business context

Business profile

The business model revolves around content creation, book publishing via the 0xWord platform, and cybersecurity education through bootcamps and online courses. The site leverages partnerships with educational and cybersecurity platforms such as 4Geeks Academy and MyPublicInbox. The target audience includes cybersecurity professionals, ethical hackers, and learners seeking practical knowledge. The site's extensive archive and consistent updates indicate sustained engagement and growth. The partnership ecosystem is robust, linking to multiple regional distributors and related services. Revenue streams likely include book sales, course fees, and advertising. The brand is consistent and trusted within its niche, supported by the author's professional reputation.

Security posture

The website employs HTTPS with a good SSL configuration, ensuring encrypted communications. Security best practices include no exposure of sensitive data and absence of vulnerable libraries or insecure forms. However, the site lacks explicit security headers such as Content Security Policy, X-Frame-Options, and Referrer-Policy, which could enhance protection against clickjacking and other attacks. No incident response or vulnerability disclosure policies are visible, and privacy compliance is minimal due to the absence of a formal privacy policy. The cookie consent banner is present and functional, indicating some level of GDPR awareness. Overall, the security posture is solid but could be improved with additional headers and documented policies.

Recommendations

  1. Implement explicit security headers including Content Security Policy, X-Frame-Options, and Referrer-Policy to strengthen security.
  2. Publish a comprehensive privacy policy and terms of service to improve legal compliance and user trust.
  3. Enhance accessibility features to meet modern standards and improve user experience for all visitors.
  4. Establish a vulnerability disclosure policy and incident response contact to demonstrate security maturity.
  5. Investigate and resolve the absence of WHOIS registration data to ensure domain legitimacy and transparency.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Chema Alonso
Description
Blog personal de Chema Alonso (CDO Telefónica, 0xWord, MyPublicInbox, Singularity Hackers) sobre seguridad, hacking, hackers y Cálico Electrónico.
Key services
Cybersecurity education, Hacking tutorials and insights, Book publishing and distribution, Public chat and inbox platform
Content quality
excellent
Branding
consistent

Technology

Stack
Blogger platform, Google Adsense, Google site verification, Atom and RSS feeds, JavaScript, CSS
Platforms
Blogger
Performance
moderate
Mobile
basic
Accessibility
basic
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • No visible sensitive data exposure
  • No vulnerable libraries detected
  • No forms with password or sensitive inputs detected

Analytics and tracking

Tracking level
minimal
Privacy practices
basic

Advertising

Ad networks
Google Adsense
Marketing tools
Google site verification
Transparency
good

Site quality

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

Key observations

  1. Website is a personal blog focused on cybersecurity and hacking by Chema Alonso
  2. Content is rich, updated daily with many posts spanning over 15 years
  3. No WHOIS registration data available, which is unusual
  4. No explicit privacy or terms of service pages found
  5. Cookie consent banner present with consent mechanism
  6. Multiple external links to related cybersecurity and educational platforms
  7. No visible forms collecting sensitive data
  8. HTTPS is enabled and site uses Google Blogger platform
  9. No WAF or blocking detected
  10. Social media presence is strong with multiple verified links
Technical notes

Notes

The website is built on the Blogger platform, leveraging Google hosting and services such as Adsense and site verification. The technology stack includes standard HTML, CSS, and JavaScript with RSS and Atom feeds for content syndication. Performance is moderate, with basic mobile optimization and accessibility. The site has a consistent design and clear navigation structure. There is an opportunity to modernize by improving mobile responsiveness and adding advanced SEO and accessibility features. No technical debt or critical risks were identified, but adding security headers and privacy documentation would enhance the technical maturity.
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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