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Security report for leadster.com.br

Leadster · Technology · Brazil

Medium risk. 8 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

50/100

Risk levelMedium

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

Leadster is a Brazilian technology company specializing in AI-powered marketing chatbots designed to increase qualified lead generation for businesses across multiple sectors including software, education, real estate, and finance. The company positions itself as a key player in conversational marketing with a SaaS business model offering free trials and subscription plans. Their website demonstrates a professional design with clear navigation, client testimonials, and case studies that reinforce their market credibility. Technically, the site uses modern frameworks such as Next.js and Bootstrap, is hosted behind Cloudflare, and integrates marketing and analytics tools like Google Tag Manager and Drip. Security posture is solid with HTTPS and no visible vulnerabilities, though there is room for improvement in security headers and published policies. Privacy compliance is weak due to the absence of visible privacy and cookie policies. Overall, the website is trustworthy and well-structured but should enhance transparency and compliance documentation.

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

8 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 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

    • 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

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

Keep watching leadster.com.br

This scan found 27 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

Email alerts on material changes and an exportable JSON history of every change.

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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
Security headers
30
Email security
75
DNS health
65
Network security
40
GDPR outside view
35
Average
50

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

Leadster operates in a competitive niche of AI-driven marketing automation and lead generation. Their focus on multiple verticals such as B2B, education, and real estate allows diversified revenue streams. The presence of partner programs and agency collaborations indicates a strategic ecosystem approach. The company leverages client success stories and measurable KPIs to build trust and demonstrate effectiveness. Their marketing tools and analytics integration suggest a data-driven approach to customer acquisition and retention. The lack of explicit company registration and contact details on the homepage may limit some trust but is common in SaaS platforms. The brand is consistent and targets medium-sized businesses seeking to optimize marketing performance through AI chatbots.

Security posture

The website enforces HTTPS and uses Cloudflare DNS, which provides baseline security and performance benefits. No security headers were detected in the provided data, indicating an opportunity to strengthen defenses against common web attacks. No exposed sensitive data or vulnerable libraries were found in the HTML content. The absence of a published security policy, incident response contacts, or vulnerability disclosure reduces transparency and may impact compliance with regulations such as GDPR or NIS2. The site uses third-party marketing and analytics scripts, which require careful privacy management. Overall, the security posture is moderate but can be improved by implementing security headers, publishing policies, and providing clear security contacts.

Recommendations

  1. Publish comprehensive privacy and cookie policies with explicit GDPR compliance statements.
  2. Implement and configure security headers such as Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options.
  3. Add a security.txt file or vulnerability disclosure page to facilitate responsible reporting.
  4. Provide clear incident response contact information including security and abuse emails.
  5. Enhance accessibility features to improve compliance and user experience for all users.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Leadster
Description
Leadster is a marketing conversational chatbot platform focused on increasing qualified lead generation on websites. It offers AI-powered chatbots and agents to improve marketing and sales performance, targeting various sectors including software, agencies, education, investments, real estate, B2B, and legal segments.
Key services
Marketing Chatbots, AI Conversational Agents, Lead Generation Optimization, Meeting Scheduling, Paid Media Optimization
Content quality
good
Branding
consistent

Technology

Stack
Next.js, React, Bootstrap 5.2, jQuery 3.7.1, Google Tag Manager, Google Analytics, Cloudflare DNS, Drip Marketing API
Frameworks
Next.js, Bootstrap
Platforms
Web
Performance
fast
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Use of Cloudflare DNS and CDN
  • No exposed sensitive data in HTML

Analytics and tracking

Services
Google Analytics, Google Tag Manager, Drip
Tracking level
moderate
Privacy practices
poor

Advertising

Tracking pixels
Drip Marketing
Marketing tools
Drip
Transparency
basic

Site quality

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

Key observations

  1. Website is fully accessible with no blocking or WAF challenges.
  2. No explicit privacy, cookie, or terms of service policies found on the homepage HTML.
  3. Strong focus on marketing chatbot solutions with AI integration.
  4. Multiple client testimonials and case studies with measurable results.
  5. Use of modern web technologies and CDN for performance.
  6. No exposed sensitive data or obvious security vulnerabilities in HTML.
  7. No contact emails or phone numbers explicitly found in the provided HTML snippet.
  8. No social media links explicitly found in the provided HTML snippet.
  9. No security.txt or vulnerability disclosure information found.
Technical notes

Notes

The website is built on a modern React/Next.js framework with Bootstrap for styling, ensuring responsive and performant user experience. Hosting and DNS are managed via Cloudflare, providing CDN and security benefits. The site integrates multiple third-party services including Google Tag Manager, Google Analytics, and Drip for marketing automation and analytics. The HTML is well-structured with appropriate meta tags and Open Graph data for SEO and social sharing. No CMS was explicitly detected, suggesting a custom or headless architecture. Performance appears optimized with preloading and deferred scripts. Technical debt is minimal based on the provided snapshot, but security header implementation is lacking. The site is mobile-optimized and accessible at a basic level, with opportunities for further enhancement.
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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