Is leanpub.com Safe? Security Analysis for Ruboss Technology Corp.
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SEQ SIA
Lastadijas 12 k-3, Riga, Latvia, LV-1050
Reg. No. 40203410806 • VAT LV40203410806
Support: guard@offseq.com • +371 2256 5353
AI Summary
Leanpub is a mature and reputable self-publishing platform founded in 2009 and operated by Ruboss Technology Corp. It specializes in enabling authors to publish ebooks and online courses using a lean publishing methodology that emphasizes iterative writing and reader feedback. The platform targets authors and learners primarily in the technology and education sectors, offering a compelling business model with high royalty rates and author promotion services. Technically, Leanpub employs a modern tech stack including Ruby on Rails and React, hosted on AWS infrastructure, with good performance and mobile optimization. Security posture is strong with HTTPS, error monitoring, and anti-bot measures, though DNSSEC is not enabled and explicit security policies are not publicly disclosed. Privacy and cookie policies are comprehensive and GDPR compliant. Overall, Leanpub presents a professional, trustworthy, and user-friendly platform with a strong market position in educational self-publishing.
Detected Technologies
10 urgent findings need attention
10 high
- + 2 more findings in the full report below
Keep leanpub.com under constant watch
Guard tracks your live infrastructure daily: certificate expiry, DNS & mail authentication drift, uptime changes, subdomain inventory, and unexpected tracker or content shifts. A full timeline captures every diff so you can prove remediation and spot regressions instantly.
Security drift alerts
Risk score drops, new high-severity issues, and header hardening gaps
Compliance watch
GDPR / NIS2 posture changes with governance evidence snapshots
Infrastructure surface
Unexpected open services, SSL expiry, DNS & email authentication changes
Content & tracker intelligence
Marketing tech shifts, analytics drift, and AI recommendation updates
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Security Headers
8 findings
15/100
GDPR Compliance
2 findings
70/100
NIS2 Compliance
8 findings
17/100
Email Security
4 findings
75/100
🧠AI Business Intelligence
Technology stack, business insights, and market analysis powered by AI.
Business Intelligence
Market & Strategic Analysis
Leanpub holds a niche leadership position in the self-publishing market, focusing on technical and educational content. Its competitive advantages include a simple Markdown-based publishing workflow, high author royalties, and integrated promotional tools such as podcasts and social media marketing. Revenue streams come from ebook and course sales, AI-powered author services, and reader memberships. The platform appeals to a global audience of authors and learners, with ongoing investments in AI services to enhance author capabilities. Partnerships with Amazon for print editions and use of major cloud providers support scalability. The company demonstrates steady growth and a commitment to author success through innovative publishing models and marketing support.
Security Posture Analysis
Comprehensive Security Assessment
Leanpub exhibits a mature security posture with mandatory HTTPS, clientTransferProhibited domain status, and use of Google reCAPTCHA to mitigate automated abuse. Rollbar integration provides real-time error monitoring. However, DNSSEC is not enabled, which is a recommended enhancement for DNS security. No explicit security policy or incident response contacts are published, which could be improved to enhance transparency and trust. No vulnerabilities or exposed sensitive data were detected in the analysis. Privacy compliance is strong with clear policies and cookie consent mechanisms. Overall, the security measures align well with industry best practices for a SaaS platform of this nature.
Strategic Recommendations
Priority Actions for Security Improvement
Enable DNSSEC on the domain to strengthen DNS security and prevent spoofing.
✨Observations
AI-powered comprehensive website and business analysis.
AI-Enhanced Website Analysis
Business Insights
Ruboss Technology Corp.
Leanpub is a platform that enables authors to write, publish, and sell ebooks and online courses using a lean publishing model. It offers authors 80% royalties, supports Markdown-based writing, and provides tools for publishing in-progress and completed works. The platform also promotes authors through social media, podcasts, and marketing tools.
excellent
consistent
Technical Stack
fast
excellent
good
good
Security Assessment
- HTTPS enforced
- Use of Google reCAPTCHA v3
- Rollbar error monitoring
- ClientTransferProhibited domain status
Analytics & Tracking
Advertising & Marketing
Website Quality Assessment
Key Observations
Leanpub is a well-established self-publishing platform focused on technical and educational content.
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🛡️Security Headers
HTTP security headers analysis and recommendations.
Security Headers
HTTP security headers analysis
Missing Strict-Transport-Security header
HIGHForces HTTPS connections
Missing X-Frame-Options header
HIGHPrevents clickjacking attacks
Missing X-Content-Type-Options header
MEDIUMPrevents MIME type sniffing
Missing Content-Security-Policy header
HIGHControls resources the browser is allowed to load
Missing X-XSS-Protection header
MEDIUMLegacy XSS protection (deprecated but still recommended)
Missing Referrer-Policy header
LOWControls referrer information sent with requests
Missing Permissions-Policy header
MEDIUMControls browser features and APIs
Sensitive data may be cached
LOWCache-Control header should include "no-store" for sensitive pages
👤GDPR Compliance
Privacy and data protection assessment under GDPR regulations.
GDPR Compliance
Privacy and data protection assessment
No Cookie Policy found
HIGHGDPR requires clear information about cookie usage
No Cookie Consent Banner found
HIGHGDPR requires explicit consent for non-essential cookies
GDPR Compliance Analysis
🛡️NIS2 Compliance
Network & Information Security Directive compliance assessment.
NIS2 Compliance
Network & Information Security Directive
No information security framework found
HIGHNIS2 requires documented cybersecurity and information security measures
No vulnerability disclosure policy
MEDIUMNIS2 encourages coordinated vulnerability disclosure
No security policy documentation found
HIGHNIS2 requires documented cybersecurity governance and risk management
No incident response procedures found
HIGHNIS2 requires documented incident response and business continuity plans
No business continuity planning found
MEDIUMNIS2 emphasizes operational resilience and business continuity
No security contact information
HIGHNIS2 requires clear incident reporting channels
No vulnerability reporting mechanism
MEDIUMClear vulnerability reporting supports coordinated disclosure
No NIS2 reference found
LOWConsider explicitly mentioning NIS2 compliance efforts
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📧Email Security
SPF, DKIM, and DMARC validation and email security assessment.
Email Security
SPF, DKIM, and DMARC validation
DMARC not enforcing
MEDIUMDMARC policy is set to "none"
No BIMI Record
LOWBIMI displays brand logos in email clients
No MTA-STS Policy
MEDIUMMTA-STS enforces TLS for email delivery
No TLS-RPT Record
LOWTLS-RPT provides reporting for email TLS issues
SPF Details
DKIM Selectors Found
DMARC Details
🏆SSL/TLS Security
Certificate validity and encryption analysis.
SSL/TLS Security
Certificate validity and encryption analysis
Weak Protocols Supported
HIGHServer supports weak protocols: TLSv1.1
OCSP Stapling Not Enabled
LOWOCSP stapling improves performance and privacy
Certificate Transparency Not Implemented
LOWCertificate is not logged in Certificate Transparency logs
SSL Certificate Expires Within 90 Days
MEDIUMSSL certificate expires in 73 days
Mixed Content Detected
MEDIUM4 resources loaded over insecure HTTP
Partial SSL/TLS Assessment
LOWCompleted 3 of 4 security checks due to time constraints
Protocol Support
OCSP Status
📊DNS Health
DNS configuration and security assessment.
DNS Health
DNS configuration and security assessment
DNSSEC Not Enabled
MEDIUMDNSSEC is not configured for this domain
CAA Records Not Configured
LOWCertificate Authority Authorization (CAA) records not found
Domain Delete Lock Not Enabled
LOWDomain can be deleted without additional verification
DMARC Policy Set to None
LOWDMARC is configured but not enforcing any policy
Domain Registration Details
DNS Records
DNSSEC Status
DNS Performance
SPF Analysis
⚡Network Security
Port scanning and network exposure analysis.
Network Security
Port scanning and network exposure analysis
Good Network Security Posture
LOWNo unnecessary services detected on common risky ports
How does leanpub.com compare?
See how leanpub.com stacks up against similar websites in the same industry.
🔧Technical Analysis
Detailed technical findings and analysis from AI assessment.
Technical Analysis
Comprehensive security assessment findings
Additional Findings
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PDF Report & Export
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Marketing Intelligence
Contact emails, phone numbers & warm leads
Plan Comparison
| Feature | PDF Report | Marketing+ |
|---|---|---|
| Full security analysis | ||
| Professional PDF export | ||
| Email delivery | ||
| Lifetime access + unlock code | ||
| Contact emails & phones | — | |
| Marketing outreach data | — |
Already purchased?
Order summary
Digital reports are delivered immediately after payment. By continuing you acknowledge the withdrawal waiver described in our Returns & Refunds policy.
Secure payments processed via EveryPay. Prices in EUR; Incl. 21% VAT.
SEQ SIA
Lastadijas 12 k-3, Riga, Latvia, LV-1050
Reg. No. 40203410806 • VAT LV40203410806
Support: guard@offseq.com • +371 2256 5353
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