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Security report for offchainlabs.com

Offchain Labs · Technology · N/a

Medium risk. 5 critical or high findings in Security headers, GDPR outside view and 1 other check.

Security score

69/100

Risk levelMedium

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

Offchain Labs is a technology company specializing in Ethereum blockchain scaling solutions. Founded approximately six years ago and venture-backed, the company has developed a suite of products including Arbitrum One, Arbitrum Nova, Arbitrum Orbit, Prysm, and Stylus. Their mission is to enable seamless and scalable interaction with Ethereum for developers, businesses, and individuals. The company has a strong market position as a leading Ethereum scaling solution provider and has expanded its capabilities through the acquisition of Prysmatic Labs. Technically, the website is built on Webflow CMS, hosted and secured via Cloudflare, and uses modern web technologies including Google Fonts and jQuery. The site is fast, mobile-optimized, accessible, and SEO-friendly. Security posture is good with HTTPS enforced and no visible sensitive data exposure, though explicit security headers and cookie consent mechanisms could be improved. The security posture is solid but could benefit from enhanced security headers, a formal incident response policy, and vulnerability disclosure information. Privacy compliance is partially addressed with a comprehensive privacy policy and terms of service, but lacks a cookie consent mechanism. Contact information is available via a contact form but lacks direct emails or phone numbers. Overall, the website and business present a professional and trustworthy image with high-quality content and strong branding. The absence of WHOIS data is a concern but likely due to privacy protection. Strategic recommendations include improving security headers, adding cookie consent, and publishing incident response and vulnerability disclosure policies to enhance trust and compliance.

Scanned

NIS2 and GDPR posture

GDPR outside view
53/ 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

5 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. 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 offchainlabs.com

This scan found 22 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
65
Security headers
30
Email security
85
DNS health
80
Network security
100
GDPR outside view
53
Average
69

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

Offchain Labs operates in the blockchain technology sector, focusing on Ethereum scaling solutions. Their competitive advantage lies in proprietary rollup and AnyTrust technologies, a strong developer ecosystem, and strategic acquisitions such as Prysmatic Labs. The business model centers on product development and ecosystem enablement for Web3 applications. Revenue streams likely include enterprise blockchain solutions, developer tools, and partnerships. Target customers are blockchain developers, enterprises, and decentralized application builders. Growth indicators include active product launches, investor backing, and media presence. The partnership ecosystem includes Ethereum community projects and blockchain infrastructure providers. Operationally, the company demonstrates maturity with a clear product suite and strategic acquisitions, positioning it well in the competitive Ethereum scaling market.

Security posture

The website demonstrates a mature security posture with HTTPS enforced and Cloudflare protection. No critical vulnerabilities or exposed sensitive data were detected. However, the absence of explicit security headers such as Content-Security-Policy and Strict-Transport-Security is a gap. There is no visible incident response or vulnerability disclosure policy, which limits transparency and readiness perception. Privacy compliance is partially met with a privacy policy and terms of service, but lacks cookie consent and explicit GDPR compliance indicators. The security culture is implied by professional content and investor backing but could be enhanced by publishing security policies and contact channels. Overall, the security posture is good but can be improved to meet higher compliance and transparency standards.

Recommendations

  1. Implement and enforce security headers including Content-Security-Policy, X-Content-Type-Options, and Strict-Transport-Security.
  2. Add a cookie consent banner/mechanism to comply with GDPR and other privacy regulations.
  3. Publish an incident response policy and provide dedicated security contact information.
  4. Create and maintain a vulnerability disclosure or security.txt file to encourage responsible reporting.
  5. Enhance privacy compliance disclosures and data retention policies to improve user trust.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Offchain Labs
Description
Offchain Labs is a company dedicated to building cutting-edge scaling solutions for Ethereum. Their mission is to enable developers, businesses, and individuals to fully experience Ethereum without compromises. They have developed products such as Arbitrum One, Arbitrum Nova, Arbitrum Orbit, Prysm, and Stylus. The company is venture-backed and Princeton-founded, with over 5 years of blockchain research and development. They acquired Prysmatic Labs in October 2022.
Key services
Arbitrum One (rollup technology scaling solution), Arbitrum Nova (AnyTrust technology for high volume, low cost transactions), Arbitrum Orbit (launching Orbit Chains), Prysm (Ethereum consensus client), Stylus (programming environment for EVM-compatible smart contracts)
Content quality
excellent
Branding
consistent

Technology

Stack
Webflow CMS, Google Fonts (Montserrat, DM Sans), jQuery 3.5.1, Cloudflare (infrastructure and security), WebFont Loader, Custom JavaScript bundles
Frameworks
Webflow
Platforms
Webflow hosting, Cloudflare CDN and security
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enabled
  • Use of Cloudflare for security and CDN
  • No exposed sensitive data in HTML
  • Secure forms with required email input

Analytics and tracking

Services
Cloudflare Insights
Tracking level
minimal
Privacy practices
basic

Advertising

Tracking pixels
Cloudflare Insights
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 rich content and multimedia.
  2. No WAF or security challenge blocking content.
  3. Professional blockchain technology company focused on Ethereum scaling.
  4. Strong social media presence and investor backing.
  5. No direct company contact emails or phone numbers found; contact via form only.
  6. No explicit cookie consent mechanism detected.
  7. WHOIS data unavailable, possibly due to privacy protection or query issues.
Technical notes

Notes

The website is built on a modern, scalable infrastructure using Webflow CMS and Cloudflare hosting and security services. The tech stack includes Google Fonts and jQuery, supporting a responsive and performant user experience. The site loads quickly, is mobile-optimized, and accessible with good SEO practices. There is no evidence of technical debt or outdated technologies. The use of Cloudflare provides DDoS protection and CDN benefits. However, the lack of explicit security headers and cookie consent mechanisms indicates areas for modernization. Overall, the technical implementation supports the business goals effectively with room for security and compliance enhancements.
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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