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Security report for succinct.xyz

Succinct · Technology · N/a

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

Security score

63/100

Risk levelMedium

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

Succinct is a technology company specializing in decentralized zero knowledge proof infrastructure, offering a fast RISC-V zkVM (SP1) and a decentralized prover network. Their platform targets developers and blockchain projects seeking to integrate privacy-preserving and verifiable computations. The company is positioned as a trusted infrastructure provider with partnerships including Polygon, Celestia, and Optimism. Technically, the website is built on Webflow with modern animation libraries and is well-optimized for performance and mobile devices. Security posture is good with HTTPS and no obvious vulnerabilities, though explicit security policies and contact channels for incident response are absent. Overall, the site reflects a professional and credible business with room for improvement in privacy compliance and security transparency.

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

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. 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 Protocols Supported

      Server supports weak protocols: TLSv1.1

      What to do: Disable TLS 1.0, TLS 1.1, and all SSL versions

      • CWE-327
      • OWASP A04:2025
      • ASVS V12.1.1

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

Keep watching succinct.xyz

This scan found 27 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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Full report

€39.90one-time

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Prices incl. 21% VAT. Secure checkout by Mollie; sold by SEQ SIA, Latvia.

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
62
Security headers
30
Email security
70
DNS health
65
Network security
100
GDPR outside view
53
Average
63

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

Succinct operates in the blockchain technology sector, focusing on zero knowledge proofs and decentralized computation. Their business model includes providing developer tools, decentralized prover services, and staking mechanisms for network participants. The company demonstrates strong market positioning through strategic partnerships and investor backing. Their target customers are blockchain developers and enterprises requiring scalable and secure proof generation. The presence of a whitepaper, blog, and case studies indicates active community engagement and thought leadership. However, direct contact information is limited to a Google Form, which may impact customer trust and support responsiveness.

Security posture

The website employs HTTPS and uses reputable external libraries, indicating a baseline security maturity. However, the absence of explicit privacy and cookie policies, security headers, vulnerability disclosure programs, and incident response contacts suggests gaps in compliance and security governance. No sensitive data exposure or vulnerable libraries were detected in the HTML content. The lack of a security.txt file and direct security contact emails limits the ability for external parties to report issues. Overall, the security posture is moderate but would benefit from formalized policies and transparency to enhance trust and compliance.

Recommendations

  1. Publish comprehensive privacy and cookie policies with GDPR compliance details.
  2. Implement security headers such as Content-Security-Policy, HSTS, and X-Frame-Options.
  3. Establish a vulnerability disclosure program with a security.txt file and dedicated contact emails.
  4. Provide direct company contact emails and phone numbers for support and security incidents.
  5. Enhance transparency by adding terms of service and incident response procedures.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Succinct
Description
Succinct is a decentralized prover network that simplifies zero knowledge proofs (ZKPs) for developers, enabling fast proof generation with their SP1 zkVM and decentralized prover network.
Key services
SP1 zkVM, Decentralized prover network, Proof generation, Verification on multiple blockchains, Staking and rewards
Content quality
excellent
Branding
consistent

Technology

Stack
Webflow CMS, GSAP animation library, SplitType text animation, Lottie animations, Google Fonts (Droid Serif), jQuery 3.5.1
Frameworks
Webflow
Platforms
Web
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • No exposed sensitive data in HTML
  • Use of external trusted libraries

Analytics and tracking

Tracking level
minimal
Privacy practices
poor

Advertising

Transparency
poor

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 animations
  2. No explicit privacy or cookie policies found
  3. Contact is primarily via Google Forms, no direct emails or phone numbers found
  4. Strong branding and partnership signals present
  5. No security.txt or vulnerability disclosure information
  6. No direct business registration or legal info visible
  7. No advertising or tracking scripts detected
Technical notes

Notes

The website is built using Webflow CMS with modern front-end technologies including GSAP for animations, SplitType for text effects, and Lottie for vector animations. It uses Google Fonts and jQuery 3.5.1. Hosting appears to be via Cloudflare CDN, contributing to fast load times and good performance. The site is mobile-optimized and accessible with clear navigation and professional design. No major technical debt or outdated technologies were detected. Opportunities exist to improve SEO and accessibility further by adding ARIA roles and meta tags for privacy and security.
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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