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Security report for tether.io

Tether Operations, S.A. de C.V. · Technology · United Kingdom

Low risk. 1 critical or high finding in SSL/TLS.

Security score

88/100

Risk levelLow

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

Tether.io is a well-established technology company founded in 2014, specializing in decentralized and sustainable technologies across finance, energy, data, education, and innovation sectors. It holds a leading market position in stablecoins with its flagship USD₮ product and operates globally with a focus on empowering individuals and communities. The website demonstrates a mature digital presence with professional design, clear navigation, and comprehensive content. Technically, it uses modern web technologies including WordPress CMS, Video.js for media, and Google Analytics for tracking, hosted behind Cloudflare DNS services. Security posture is solid with HTTPS enforced and domain protections in place, though there is room for improvement in publishing explicit security policies and incident response information. Privacy compliance is strong with clear cookie consent mechanisms and GDPR-aligned policies. Overall, the site is trustworthy, professional, and well-positioned in its market niche.

Scanned

NIS2 and GDPR posture

GDPR outside view
83/ 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

1 finding 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.

    • High

      Weak SSL Key Length

      SSL certificate uses 256-bit key, which is considered weak

      What to do: Use at least 2048-bit RSA or 256-bit ECC key

      • CWE-326
      • OWASP A04:2025
      • Mozilla TLS: Mozilla Server Side TLS 6.0 intermediate: rsa_key_size 2048

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

Keep watching tether.io

This scan found 11 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
75
Security headers
85
Email security
100
DNS health
85
Network security
100
GDPR outside view
83
Average
88

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

Breach exposure

Leaked credentials and lookalike domains from OffSeq Breach. The counts are free; the detailed lists are paid add-ons.

Dark web exposure

Add-on

Leaked records that mention tether.io, from OffSeq Breach.

No leaked records found

Breach holds no records for tether.io right now. New leaks arrive continuously, so monitoring on Breach alerts you if that changes.

Monitor on Breach (opens in a new tab)

Technical appendix

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

Business context

Business profile

Tether operates in multiple high-growth sectors including fintech, sustainable energy, AI infrastructure, and education. Its business model leverages technology innovation and investment to deliver products like stablecoins and Bitcoin mining solutions. The company targets a broad audience including individuals, businesses, and governments worldwide. Its market leadership in stablecoins and active development of peer-to-peer and AI infrastructure provide competitive advantages. The ecosystem includes related domains and partner platforms such as keet.io, enhancing its service offerings. Growth indicators include a large user base, extensive mining operations, and educational outreach. The company maintains a consistent brand and strong trust signals, supporting its credibility and market presence.

Security posture

The website enforces HTTPS and uses domain registration protections to prevent unauthorized changes. Cookie consent and privacy policies are comprehensive and GDPR compliant. However, no explicit security policy or incident response contacts are publicly available, which could hinder transparency and readiness in case of security incidents. The absence of security headers in the HTML response is a minor gap. No vulnerabilities or exposed sensitive data were detected in the content. Google Analytics is used responsibly with opt-out mechanisms. Overall, the security posture is good but could be enhanced by publishing dedicated security documentation and implementing additional HTTP security headers.

Recommendations

  1. Publish a dedicated security policy page outlining security practices and controls.
  2. Provide clear incident response contact channels such as security@ or abuse@ email addresses.
  3. Implement HTTP security headers like Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security.
  4. Consider publishing a vulnerability disclosure policy or security.txt file to encourage responsible reporting.
  5. Enhance transparency by including verified company contact emails and phone numbers on the website.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Tether Operations, S.A. de C.V.
Description
Tether is a technology company focused on empowering individuals, communities, cities, and nations to become self-sustainable, independent, and free through decentralized, open, and sustainable technology. They operate across five pillars: finance, power, data, education, and evolution.
Key services
Stablecoins and digital asset tokenization, Sustainable energy solutions and Bitcoin mining, Peer-to-peer and AI infrastructure development, Educational programs for digital and gig economies, Innovation and future technology exploration
Content quality
excellent
Branding
consistent

Technology

Stack
Video.js, Google Analytics, Cloudflare DNS
Performance
moderate
Mobile
good
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • Cookie consent mechanism implemented
  • No exposed sensitive data in HTML
  • Use of clientDeleteProhibited and clientTransferProhibited domain statuses

Analytics and tracking

Services
Google Analytics
Tracking level
moderate
Privacy practices
good

Advertising

Transparency
good

Site quality

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

Key observations

  1. Website is professionally designed and well-structured.
  2. Strong focus on multiple technology sectors including finance, energy, data, education, and innovation.
  3. Comprehensive cookie consent and privacy mechanisms implemented.
  4. No direct contact emails or phone numbers found; contact is via a dedicated contact site.
  5. Use of modern web technologies and analytics tools.
  6. No security policy or incident response information publicly available.
  7. WHOIS data supports domain legitimacy and business consistency.
Technical notes

Notes

The website is built on WordPress CMS with a modern front-end using Video.js for video playback and Google Analytics for user tracking. Hosting is managed via Cloudflare DNS, providing performance and security benefits. The site is mobile optimized with responsive design and good accessibility features. Performance is moderate, with video content preloaded lazily to optimize load times. SEO is well addressed with appropriate meta tags and Open Graph data. There is no evidence of outdated or vulnerable libraries. Technical risks are low, but continuous monitoring and updates are recommended to maintain security and performance.
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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