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Security report for helius.dev

Helius · Technology · United States

Medium risk. 6 critical or high findings in Security headers, GDPR outside view and 2 other checks.

Security score

66/100

Risk levelMedium

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

Helius is a technology company specializing in providing Solana blockchain infrastructure, including RPC nodes, APIs, webhooks, and dedicated developer tools. Positioned as a leading platform in the Solana ecosystem, Helius serves developers and enterprises aiming to build scalable and efficient crypto applications. The company is backed by prominent venture capital firms such as Founders Fund and Reciprocal Ventures, enhancing its market credibility and growth potential. Their business model revolves around offering reliable, low-latency blockchain infrastructure services with a focus on developer experience and scalability. Technically, Helius employs modern web technologies including Next.js and React, with integrations for gRPC and WebSockets to support real-time blockchain data streaming. The website demonstrates excellent performance, mobile optimization, and SEO practices, reflecting a mature digital presence. Analytics tools like Google Analytics and Tag Manager are used for user behavior insights, though privacy policy disclosures are minimal. From a security perspective, Helius maintains a strong posture with HTTPS enforcement and SOC 2 certification, indicating adherence to industry best practices for infrastructure security. However, the absence of publicly available privacy policies, cookie consent mechanisms, and incident response contacts suggests areas for improvement in compliance and transparency. No critical vulnerabilities or suspicious patterns were detected. Overall, Helius presents a trustworthy and professional platform with robust technical infrastructure and strong industry backing. Strategic enhancements in privacy compliance and security transparency would further solidify its position and trustworthiness in the blockchain infrastructure market.

Scanned

This is an earlier scan of helius.dev. View the latest report

NIS2 and GDPR posture

GDPR outside view
58/ 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

6 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 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

  3. Email security

    SPF, DKIM and DMARC stop others sending email that looks like it comes from your domain, a common route to phishing and invoice fraud.

    • High

      No SPF record found

      SPF helps prevent email spoofing

      What to do: Add SPF record: "v=spf1 include:_spf.yourmailprovider.com ~all"

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

Keep watching helius.dev

This scan found 23 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

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

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Full report

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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
72
Security headers
30
Email security
50
DNS health
85
Network security
100
GDPR outside view
58
Average
66

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

Helius occupies a strategic position as a key infrastructure provider within the Solana blockchain ecosystem, targeting developers and enterprises building crypto applications. Its competitive advantage lies in offering low-latency, reliable RPC nodes and comprehensive APIs that simplify blockchain interactions. Revenue streams likely include subscription-based access to APIs and dedicated infrastructure services. The company benefits from a strong partnership ecosystem with multiple reputable venture capital investors and Solana Labs' investment arm, facilitating growth and innovation. The presence of testimonials from industry leaders and Solana co-founders underscores its credibility and influence. Growth indicators include active product offerings, continuous technical enhancements, and a focus on enterprise-grade reliability.

Security posture

Helius demonstrates a mature security posture with HTTPS enforced across its website and SOC 2 certification for its infrastructure, reflecting compliance with recognized security standards. Security headers such as Content-Security-Policy and X-Frame-Options are present, enhancing protection against common web vulnerabilities. No exposed sensitive data or vulnerable libraries were identified in the website content. However, the lack of publicly available privacy policies, cookie consent mechanisms, and dedicated security incident contact channels indicates gaps in compliance and incident response readiness. These gaps could impact user trust and regulatory adherence, especially concerning GDPR and similar frameworks. Overall, the security culture appears strong but would benefit from increased transparency and formalized disclosure practices.

Recommendations

  1. Publish comprehensive privacy and cookie policies with clear GDPR compliance statements.
  2. Implement a visible vulnerability disclosure program or security.txt file to facilitate responsible reporting.
  3. Provide dedicated security incident contact channels such as security@ or abuse@ email addresses.
  4. Enhance cookie consent mechanisms to comply with privacy regulations and improve user transparency.
  5. Regularly audit and update third-party scripts and dependencies to mitigate potential vulnerabilities.

Contact details published on the site

Addresses
Legal name
Helius
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Helius
Description
Solana RPCs, APIs, webhooks and dedicated infrastructure to build and ship crypto apps, fast. Get started for free in 1 click.
Key services
Solana RPC nodes, Solana Webhooks and WebSockets, Solana gRPC, NFT APIs, Token APIs, Transaction APIs, Validator services
Content quality
excellent
Branding
consistent

Technology

Stack
Next.js, React, JavaScript, gRPC, WebSockets, Google Analytics, Google Tag Manager
Frameworks
Next.js
Platforms
Solana blockchain
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • SOC 2 certified infrastructure
  • No exposed sensitive data found in HTML
  • Use of modern frameworks with security features

Analytics and tracking

Services
Google Analytics, Google Tag Manager
Tracking level
moderate
Privacy practices
basic

Advertising

Marketing tools
Typeform
Transparency
basic

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 use of structured data (JSON-LD) for SEO and rich snippets.
  3. No explicit privacy or cookie policies found on main page or metadata.
  4. Contact information limited to emails found in structured data; no phone or physical address explicitly displayed.
  5. Multiple reputable venture capital investors backing the company.
  6. Website uses modern web technologies and frameworks.
  7. Security posture is strong with SOC 2 certification and HTTPS enforcement.
  8. No visible forms collecting personal data on the main page.
  9. Social media presence includes LinkedIn, Twitter (X), YouTube, and GitHub.
  10. Testimonials from industry leaders and Solana co-founders enhance trust.
Technical notes

Notes

The website is built on a modern technology stack featuring Next.js and React, enabling server-side rendering and optimized performance. Integration of gRPC and WebSockets supports real-time data streaming essential for blockchain applications. The site is well-optimized for mobile devices and demonstrates good SEO practices through structured data and meta tags. Hosting details are not explicit but likely involve cloud providers supporting scalable infrastructure. Performance is fast with minimal loading delays. Technical debt appears low, with opportunities to enhance compliance-related features such as privacy and security disclosures. The technical risks are minimal but should be monitored through continuous security assessments and dependency management.
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

Earlier scans of this domain

  1. 66/100Medium29 findingsView report
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