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Security report for tatum.io

Tatum Blockchain Services s.r.o. · Technology · Czech Republic

Medium risk. 2 critical or high findings in SSL/TLS and GDPR outside view.

Security score

65/100

Risk levelMedium

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

Tatum Blockchain Services s.r.o. operates a leading blockchain development platform designed to simplify Web3 application creation by providing a unified framework supporting over 100 blockchain protocols. The company targets developers and enterprises seeking scalable, reliable blockchain infrastructure and APIs. Their platform includes RPC nodes, SDKs, blockchain APIs, notifications, virtual accounts, and NFT management tools, positioning them as a comprehensive solution in the blockchain technology sector. The website reflects a mature business with a strong market position and a medium-sized company footprint founded in 2018 in the Czech Republic. Technically, the website is built on modern web technologies including Webflow CMS, JavaScript SDKs, and integrates analytics and marketing tools such as Amplitude and Google Tag Manager. Hosting and DNS services are provided via Cloudflare, ensuring fast performance and robust security. The site is mobile-optimized, accessible, and SEO-friendly, with professional design and clear navigation enhancing user experience. From a security perspective, Tatum demonstrates strong adherence to best practices, including HTTPS enforcement, presence of key security headers, and recognized certifications such as SOC2 and ISO 27001. The domain registration details are consistent with the business claims, enhancing trustworthiness. However, DNSSEC is not enabled, and no explicit vulnerability disclosure or incident response contacts are published, representing areas for improvement. Overall, Tatum presents a secure, professional, and trustworthy platform with comprehensive privacy and cookie policies compliant with GDPR. The absence of blocking mechanisms or WAF challenges allows full content accessibility. Strategic recommendations include enabling DNSSEC, publishing a vulnerability disclosure policy, and providing explicit incident response contacts to further strengthen security posture and transparency.

Scanned

NIS2 and GDPR posture

GDPR outside view
68/ 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

2 findings rated critical or high. Fix these first.

  1. 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

  2. GDPR outside view

    These are the privacy signals visitors and data protection authorities look for under GDPR.

    • 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 tatum.io

This scan found 15 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

€25per month

  • 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
60
Email security
70
DNS health
90
Network security
100
GDPR outside view
68
Average
65

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

Tatum is positioned as a key player in the blockchain development ecosystem, offering a platform-as-a-service model that reduces complexity and accelerates time-to-market for blockchain applications. Their extensive support for 100+ blockchain protocols and integration with major chains like Ethereum, Bitcoin, Solana, and Polkadot provides a competitive advantage. Revenue streams likely include subscription plans, enterprise licensing, and affiliate programs. The company targets developers, fintech firms, gaming companies, and enterprises requiring blockchain infrastructure. Partnerships with security firms like CertiK and endorsements from clients such as Binance and LimeWire indicate strong market credibility. Growth indicators include a large developer base (170K+), significant transaction volume ($35B+), and active community engagement via Discord and GitHub. The business model emphasizes scalability, reliability, and developer empowerment, supported by a comprehensive ecosystem and documentation.

Security posture

Tatum exhibits a mature security posture with multiple certifications (SOC2, ISO 27001) and a top 10% ranking on CertiK, reflecting strong code and platform security. The website enforces HTTPS and includes essential security headers, reducing common web vulnerabilities. Cookie consent mechanisms and privacy policies demonstrate compliance with data protection regulations. No exposed sensitive data or vulnerable libraries were detected in the website content. However, the lack of DNSSEC and absence of a published vulnerability disclosure or incident response contact limit transparency and rapid response capabilities. The company should consider publishing a security.txt file and providing dedicated security contact channels to enhance incident management and community trust. Overall, the security posture is strong but can be improved with enhanced DNS security and formal vulnerability handling processes.

Recommendations

  1. Enable DNSSEC on the domain to improve DNS integrity and prevent spoofing.
  2. Publish a vulnerability disclosure policy and security.txt file to facilitate responsible reporting.
  3. Provide explicit incident response contact information (e.g., security@ or abuse@ email addresses).
  4. Regularly review and update third-party libraries and dependencies to avoid vulnerabilities.
  5. Enhance transparency by detailing data retention policies and privacy compliance measures.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Tatum Blockchain Services s.r.o.
Description
Tatum makes blockchain development simple. It’s the go-to blockchain development platform with a unified framework for building Web3 apps using any of the 100+ protocols.
Key services
RPC Nodes, JavaScript SDK, Blockchain API, Notifications, Virtual Accounts, Data Backfill, Exchange Rates, Fee Estimation, NFT Management
Content quality
excellent
Branding
consistent

Technology

Stack
JavaScript, Webflow CMS, Amplitude Analytics, Google Tag Manager, CookieHub, Postscribe, Finsweet Attributes
Frameworks
Webflow
Platforms
Cloudflare (DNS and likely CDN)
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
90/100
Good practices seen
  • HTTPS enforced
  • ClientTransferProhibited domain status
  • Use of security certifications (SOC2, ISO 27001)
  • Cookie consent mechanism implemented

Analytics and tracking

Services
Amplitude, Google Analytics
Tracking level
moderate
Privacy practices
good

Advertising

Tracking pixels
Amplitude, Google Analytics (via GTM)
Marketing tools
Promotekit
Transparency
good

Site quality

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

Key observations

  1. Website is fully accessible with no blocking or WAF challenges.
  2. Strong presence of security certifications and trust badges.
  3. Comprehensive blockchain development platform supporting 100+ protocols.
  4. Professional design and clear navigation with extensive documentation.
  5. Active social media presence and community engagement.
  6. No exposed sensitive data or security vulnerabilities detected in content.
  7. Cookie consent and privacy policies are implemented and GDPR compliant.
  8. WHOIS data supports legitimacy and business consistency.
Technical notes

Notes

The website leverages a modern technology stack including Webflow CMS for content management, JavaScript SDKs for blockchain interaction, and integrates analytics tools such as Amplitude and Google Tag Manager for user behavior tracking. Hosting and DNS are managed via Cloudflare, ensuring fast content delivery and security. The site is well-optimized for mobile devices and accessibility standards, with clean, valid HTML and CSS. Performance is fast with minimal loading delays. The use of cookie consent tools and compliance with GDPR indicates good data privacy practices. Technical risks are minimal, with no visible outdated or vulnerable libraries. Opportunities exist to further modernize DNS security with DNSSEC and to formalize security communication channels. Overall, the technical infrastructure supports a robust, scalable, and secure blockchain development platform.
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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