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Security report for dados.gov.br

Governo Federal · Government · Brazil

Medium risk. 4 critical or high findings in GDPR outside view.

Security score

73/100

Risk levelMedium

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

The website dados.gov.br is the official Brazilian Federal Government's Open Data Portal, providing a comprehensive catalog of datasets, resources, and data reuse platforms aimed at promoting transparency, research, and innovation. It serves a broad audience including researchers, developers, government entities, and the general public interested in accessing government data. The portal is well-branded with consistent government identity and offers extensive datasets and dashboards to facilitate data-driven decision making. Technically, the site leverages modern JavaScript frameworks, likely Vue.js, and integrates Google Tag Manager for analytics. Hosting is provided via Amazon AWS infrastructure, ensuring scalability and reliability. The site demonstrates good mobile optimization and SEO practices, though accessibility features could be enhanced. Performance is moderate, with prefetching of resources indicating optimization efforts. From a security perspective, the site uses HTTPS and does not expose sensitive data in the HTML. However, explicit security headers are not evident in the provided data, and there is no visible security policy or incident response contact information. Privacy compliance is basic, with no explicit privacy or cookie policies detected on the homepage, and no consent mechanisms for cookies. Social media links connect to official government accounts, enhancing trust. Overall, the site is a credible and authoritative government resource with excellent content quality and business credibility. To improve, it should publish clear privacy and cookie policies, implement cookie consent mechanisms, add security headers, and provide vulnerability disclosure information to enhance security posture and privacy compliance.

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

4 findings rated critical or high. Fix these first.

  1. 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

    • High

      No Cookie Consent Banner found

      GDPR requires explicit consent for non-essential cookies

      What to do: Implement a cookie consent banner that appears on first visit

    • High

      Third-party services without privacy policy

      Detected services: Google Analytics, Facebook, Twitter, LinkedIn

      What to do: Document all third-party data sharing in your privacy policy

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

Keep watching dados.gov.br

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
90
Security headers
80
Email security
70
DNS health
60
Network security
100
GDPR outside view
35
Average
73

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

dados.gov.br occupies a strong market position as the official Brazilian government open data portal, serving as a central hub for public datasets and data reuse initiatives. Its business model is non-commercial, focused on transparency and public service. The portal supports various sectors indirectly through data provision, including governance, social programs, environment, and infrastructure. The presence of dashboards and infographics indicates an emphasis on data visualization and accessibility. Partnerships with government agencies and integration with gov.br ecosystem strengthen its operational ecosystem. Growth indicators include a large number of datasets (over 12,000) and active user base (over 90,000 users). The portal's strategic importance is high within Brazil's digital government initiatives.

Security posture

The security maturity of dados.gov.br is moderate to good. The site enforces HTTPS and uses reputable hosting infrastructure (AWS). No signs of exposed sensitive data or vulnerable libraries were found in the HTML content. However, the absence of explicit security headers (such as CSP, HSTS) and lack of published security or incident response policies indicate room for improvement. No vulnerability disclosure or security.txt files were detected, which limits transparency in security incident handling. Privacy compliance is minimal, with no cookie consent or privacy policy evident. Overall, while the site is secure in basic terms, enhancing security headers, publishing policies, and implementing privacy mechanisms would strengthen its posture.

Recommendations

  1. Publish a comprehensive privacy policy and cookie policy prominently accessible on the site.
  2. Implement a cookie consent mechanism to comply with GDPR and other privacy regulations.
  3. Add and enforce security headers such as Content Security Policy (CSP), HTTP Strict Transport Security (HSTS), and X-Frame-Options.
  4. Create and publish a vulnerability disclosure policy and security.txt file to facilitate responsible reporting.
  5. Enhance accessibility features to improve compliance with digital accessibility standards.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Governo Federal
Description
Portal Brasileiro de Dados Abertos e Catálogo Nacional de Dados, providing open government data sets, resources, reuses, organizations, and news for research, app development, and public service creation.
Key services
Publishing open datasets, Providing data reuse platforms, Offering dashboards and infographics, Facilitating access to government organizations and themes
Content quality
excellent
Branding
consistent

Technology

Stack
JavaScript, Vue.js (inferred from data-v-* attributes), Google Tag Manager, FontAwesome icons, CSS animations and transforms
Frameworks
Vue.js
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced (implied by gov.br domain and modern standards)
  • Use of Google Tag Manager for analytics
  • No exposed sensitive data in HTML

Analytics and tracking

Services
Google Analytics (via Google Tag Manager)
Tracking level
moderate
Privacy practices
basic

Advertising

Transparency
basic

Site quality

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

Key observations

  1. Official Brazilian government open data portal with extensive datasets and resources.
  2. No privacy or cookie policies explicitly found on homepage content.
  3. No visible contact emails or phone numbers on homepage.
  4. Strong use of modern JavaScript frameworks and Google Tag Manager for analytics.
  5. No security.txt or vulnerability disclosure policy detected.
  6. Social media links point to official government accounts.
  7. WHOIS data consistent with legitimate government domain.
Technical notes

Notes

The website uses a modern front-end stack, likely Vue.js, with extensive use of JavaScript and CSS animations. Google Tag Manager is used for analytics and tracking. The site is hosted on AWS, as indicated by the DNS servers. Prefetching of CSS and JS chunks suggests performance optimization efforts. The site is mobile responsive and uses semantic HTML elements. However, no CMS was detected, indicating a custom or government-developed platform. The site could benefit from improved accessibility and explicit SEO metadata. No critical technical debt or vulnerabilities were identified in the provided content.
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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