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Security report for optimism.io

Optimism · Technology · N/a

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

Security score

74/100

Risk levelMedium

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

Optimism is a leading blockchain infrastructure provider specializing in scalable, customizable Layer 2 solutions for Ethereum, powered by their proprietary OP Stack technology. The company targets developers and enterprises seeking to leverage Ethereum-grade security while improving scalability and margins. Their market position is strong within the blockchain technology sector, focusing on Layer 2 scaling solutions. The website is professionally designed using modern tools like Framer and integrates analytics services such as Google Analytics and Mixpanel, indicating a mature digital infrastructure. Security posture is adequate with HTTPS enabled, but lacks visible security headers and formal privacy or cookie policies, which are areas for improvement. No blocking or WAF challenges were detected, allowing full content access. Overall, the website presents a credible and professional business presence with room to enhance privacy compliance and security best practices.

Scanned

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

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 optimism.io

This scan found 18 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.

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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

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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
40
Email security
85
DNS health
85
Network security
100
GDPR outside view
58
Average
74

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

Optimism operates in the blockchain technology sector, providing Layer 2 scaling infrastructure for Ethereum. Their business model revolves around offering scalable blockchain infrastructure solutions that maintain Ethereum-grade security. The target audience includes blockchain developers, infrastructure operators, and enterprises requiring scalable blockchain solutions. The company leverages modern web technologies and analytics tools to monitor user engagement and performance. While the website lacks explicit contact information and privacy disclosures, the professional presentation and technology focus suggest a well-established entity. No suspicious domains or partners were identified from the website content. The absence of WHOIS data due to privacy protection is consistent with blockchain industry practices.

Security posture

The website employs HTTPS, ensuring encrypted communication. However, the absence of key security headers such as Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options reduces the overall security posture. No vulnerabilities or exposed sensitive data were detected in the HTML content. The lack of a published vulnerability disclosure policy or security.txt file limits transparency in incident response readiness. Privacy compliance is weak due to missing privacy and cookie policies and consent mechanisms. The use of third-party analytics introduces moderate user tracking, but no explicit data retention policies were found. Overall, the security maturity is moderate with clear opportunities for enhancement in headers, policies, and incident response.

Recommendations

  1. Implement comprehensive privacy and cookie policies with clear GDPR compliance and consent mechanisms.
  2. Add essential security headers such as Content-Security-Policy, X-Frame-Options, and X-Content-Type-Options to improve security posture.
  3. Publish a vulnerability disclosure policy or security.txt file to enhance transparency and incident response readiness.
  4. Provide clear and accessible contact information, including security and abuse contacts.
  5. Regularly audit third-party scripts and tracking tools to ensure minimal privacy impact and compliance.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Optimism
Description
Own your infrastructure. Grow your margins. The most used blockchain infrastructure. Launch scalable, customizable Layer 2s and apps with Ethereum-grade security - powered by the OP Stack.
Key services
Layer 2 blockchain infrastructure, OP Stack technology, Scalable and customizable blockchain solutions
Content quality
good
Branding
consistent

Technology

Stack
Google Analytics, Mixpanel, Framer (CMS/website builder), JavaScript
Frameworks
Framer
Performance
moderate
Mobile
good
Accessibility
basic
SEO
good

Security

Observed score
70/100
Good practices seen
  • HTTPS enabled

Analytics and tracking

Services
Google Analytics, Mixpanel
Tracking level
moderate
Privacy practices
poor

Advertising

Tracking pixels
Mixpanel
Marketing tools
Mixpanel
Transparency
basic

Site quality

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

Key observations

  1. WHOIS data unavailable due to malformed query or privacy protection.
  2. Website is accessible with no WAF or blocking detected.
  3. No explicit privacy, cookie, or terms of service pages found in the provided HTML.
  4. No contact emails or phone numbers explicitly found in the HTML content.
  5. Website uses modern analytics and tracking tools but lacks visible privacy compliance disclosures.
  6. Content is focused on blockchain infrastructure and Layer 2 Ethereum scaling solutions.
  7. No security.txt or vulnerability disclosure information found.
  8. Website is built using Framer, a modern web design tool.
  9. No suspicious or malicious content detected.
Technical notes

Notes

The website is built using Framer, a modern web design and CMS platform, and integrates analytics tools like Google Analytics and Mixpanel for user behavior tracking. The site uses asynchronous JavaScript loading for performance optimization. Meta tags for SEO and social media (Open Graph and Twitter cards) are well implemented, supporting good search engine visibility and social sharing. Mobile optimization is good, with responsive design elements detected. However, accessibility features are basic and could be improved. Hosting provider details are not explicitly found. Performance is moderate, with potential for improvement through enhanced caching and security header implementation. Overall, the technical infrastructure supports a professional and scalable web presence.
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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