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Security report for santillanaeducacao.com.br

Santillana · Education · Brazil

Medium risk. 5 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

67/100

Risk levelMedium

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

Santillana is a well-established educational content provider operating primarily in Brazil. The website presents educational services and digital learning platforms targeting students, educators, and schools. The company leverages modern web technologies and tracking tools to optimize user experience and marketing efforts. The site is hosted on Amazon AWS infrastructure, indicating a robust hosting environment. Privacy compliance is addressed with a linked privacy policy that aligns with GDPR standards, and a consent management platform is implemented to handle cookie preferences. However, explicit contact information and detailed security policies are not prominently available on the homepage, which could be improved to enhance transparency and trust. Overall, the website demonstrates a solid technical foundation with good security posture and compliance practices.

Scanned

NIS2 and GDPR posture

GDPR outside view
80/ 100 · Low
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

5 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 Cookie Policy found

      GDPR requires clear information about cookie usage

      What to do: Add a dedicated cookie policy explaining cookie usage and purposes

  3. 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

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

Keep watching santillanaeducacao.com.br

This scan found 25 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
67
Security headers
15
Email security
75
DNS health
65
Network security
100
GDPR outside view
80
Average
67

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

Santillana operates in the education sector, focusing on content publishing and digital learning solutions. The business model revolves around providing educational materials and services to schools and students. The company appears to have a strong market position in Brazil, supported by consistent branding and professional web presence. Marketing and analytics tools such as Google Analytics, Facebook Pixel, and RD Station are integrated to support customer engagement and growth. The absence of explicit contact details and terms of service pages suggests areas for improvement in customer support and legal transparency. No suspicious domains or partners were identified, indicating a focused and legitimate operational scope.

Security posture

The website enforces HTTPS and uses a consent management platform to comply with privacy regulations. While no explicit security headers were detected in the provided data, the site avoids exposing sensitive information and uses reputable hosting services. The integration of tracking scripts is managed with user consent mechanisms, reducing privacy risks. There is no evidence of vulnerability disclosure policies or incident response contacts, which are recommended for enhanced security maturity. Overall, the security posture is good but could benefit from publishing detailed security policies and implementing additional HTTP security headers.

Recommendations

  1. Implement and publish a comprehensive security policy and incident response contact information.
  2. Add HTTP security headers such as Content-Security-Policy, Strict-Transport-Security, and X-Frame-Options.
  3. Provide clear contact information including emails and phone numbers for customer and security inquiries.
  4. Publish terms of service and vulnerability disclosure policies to improve legal transparency and security trust.
  5. Enhance accessibility features and SEO metadata to improve user experience and search engine ranking.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Santillana
Description
Santillana is an education-focused company providing educational content and services.
Key services
Educational content, Digital learning platforms, Educational services
Content quality
good
Branding
consistent

Technology

Stack
JavaScript, Google Tag Manager, Facebook Pixel, AWS DNS, Axios (JS library)
Frameworks
Svelte (inferred from JS code patterns)
Performance
moderate
Mobile
good
Accessibility
basic
SEO
basic

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • No exposed sensitive data in HTML
  • Use of consent management platform

Analytics and tracking

Services
Google Analytics, Facebook Analytics
Tracking level
moderate
Privacy practices
good

Advertising

Ad networks
Google Analytics, Facebook
Tracking pixels
Facebook Pixel
Marketing tools
RD Station
Transparency
basic

Site quality

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

Key observations

  1. Website uses modern tracking and consent management tools
  2. No explicit contact emails or phone numbers found on homepage
  3. Privacy policy is linked and appears GDPR compliant
  4. No terms of service or security policy pages explicitly found
  5. No vulnerability disclosure or security.txt detected
  6. Website content is in Portuguese (pt-br) with privacy policy in English
  7. No signs of adult or questionable content
  8. Site hosted on AWS with multiple AWS nameservers
  9. Use of Google Tag Manager and Facebook Pixel for analytics and marketing
Technical notes

Notes

The website uses modern JavaScript libraries including Axios and Svelte framework components, indicating a contemporary front-end architecture. Google Tag Manager and Facebook Pixel are used for analytics and marketing tracking. Hosting is provided via Amazon AWS, as evidenced by the nameservers. Performance is moderate with good mobile optimization. The site includes meta tags for keywords and viewport settings but lacks extensive Open Graph or JSON-LD structured data for SEO enhancement. Accessibility is basic, with room for improvement. No CMS was explicitly detected. Overall, the technical infrastructure is solid but could be enhanced with better SEO and accessibility practices.
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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