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Security report for lucidchart.com

Lucid Software Inc. · Technology · United States

Medium risk. 1 critical or high finding in GDPR outside view.

Security score

69/100

Risk levelMedium

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

Lucid Software Inc. operates Lucidchart, a leading SaaS platform specializing in intelligent diagramming and visual collaboration. The company targets enterprise and team users seeking to optimize processes and systems through AI-powered diagramming and integrations with popular enterprise tools. The website reflects a mature digital presence with comprehensive content, strong branding, and a wide range of integrations and resources. Technically, the site is built on modern frameworks like Gatsby and React, hosted via Akamai, and employs security headers and privacy compliance mechanisms. However, a critical security concern is the invalid SSL certificate, which undermines the overall security posture. Despite this, the company maintains good privacy policies and legal documentation, supporting GDPR compliance. Overall, Lucidchart presents a professional and trustworthy platform with room for security improvements.

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

1 finding rated critical or high. Fix these first.

  1. GDPR outside view

    These are the privacy signals visitors and data protection authorities look for under GDPR.

    • 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

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Keep watching lucidchart.com

This scan found 13 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
50
Security headers
70
Email security
50
DNS health
85
Network security
100
GDPR outside view
58
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

Lucid Software holds a strong market position in the technology sector, offering diagramming and visual collaboration tools enhanced by AI and automation. Their business model is subscription-based SaaS, targeting enterprises and teams. The company leverages partnerships and integrations with major platforms like Jira, Microsoft Teams, Slack, and Notion, enhancing its ecosystem. The website content and structure indicate a focus on user engagement, education, and support, with extensive resources and community involvement. The presence of multiple language options and global branding suggests a broad international reach.

Security posture

The website implements several security best practices including Content Security Policy, X-Frame-Options, and X-Content-Type-Options headers. However, the SSL certificate is invalid, and HSTS is not fully enabled, which are significant vulnerabilities. OCSP stapling and session resumption are not implemented, reducing security and performance. No incident response or vulnerability disclosure information is publicly available. Overall, the security posture is moderate but requires urgent attention to SSL and HTTPS enforcement to protect user data and maintain trust.

Recommendations

  1. Immediately renew and deploy a valid SSL certificate to enable HTTPS securely.
  2. Enable and configure HSTS with includeSubDomains and preload to enforce HTTPS.
  3. Implement OCSP stapling to improve certificate revocation checking.
  4. Publish a vulnerability disclosure policy and security.txt file to enhance transparency.
  5. Enhance incident response contact information and security communication channels.
Technical notes

Notes

The website uses modern web technologies including React and Gatsby, indicating a contemporary and scalable architecture. Hosting is via Akamai CDN, supporting global performance and availability. The site is mobile-optimized with good accessibility and SEO practices. However, performance metrics are not available, and SSL misconfiguration impacts security and potentially user trust. The site integrates with multiple third-party services for analytics, consent management, and marketing, reflecting a mature digital marketing strategy. Technical debt appears low, but security improvements are needed to align with best practices.
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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