Is opensea.io Safe? Security Analysis for Opensea
https://opensea.ioCheck if opensea.io is a scam or legitimate. Free security scan and reviews.
Above Technology avg (72)
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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
OpenSea is a leading NFT marketplace platform founded in 2017 and headquartered in the United States. It enables users to discover, trade, and create onchain digital assets, primarily focusing on NFTs across multiple blockchain platforms including Ethereum, Polygon, and others. The platform targets NFT collectors, digital artists, and crypto enthusiasts, offering a comprehensive marketplace with verified collections and rich metadata. OpenSea holds a strong market position as a pioneer and dominant player in the NFT ecosystem. Technically, OpenSea employs modern web technologies such as React and Next.js, leveraging Cloudflare for DNS and CDN services, and integrates advanced features like video streaming via Mux. The website is optimized for performance, mobile responsiveness, and accessibility, reflecting a mature digital infrastructure. SEO and metadata practices are well implemented, supporting discoverability and user engagement. From a security perspective, OpenSea enforces HTTPS with strong SSL configurations and implements key security headers. However, it lacks publicly disclosed security policies, incident response contacts, and a vulnerability disclosure program, which are areas for improvement. The domain registration is consistent and transparent, enhancing trustworthiness. No critical vulnerabilities or suspicious content were detected, and privacy compliance is well addressed with comprehensive privacy and cookie policies. Overall, OpenSea presents a high-quality, professional, and secure platform with minor gaps in explicit security governance disclosures. Strategic recommendations include enabling DNSSEC, publishing security policies and incident response contacts, and establishing a formal vulnerability disclosure program to further enhance trust and security posture.
Detected Technologies
8 urgent findings need attention
8 high
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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
5 findings
55/100
GDPR Compliance
2 findings
70/100
NIS2 Compliance
7 findings
22/100
Email Security
2 findings
87/100
🧠AI Business Intelligence
Technology stack, business insights, and market analysis powered by AI.
Business Intelligence
Market & Strategic Analysis
OpenSea operates as an essential technology entity within the blockchain and NFT sector, offering a marketplace business model that facilitates NFT trading and creation. Its competitive advantage lies in its early market entry, extensive verified collections, and multi-chain support. Revenue streams likely include transaction fees and premium services. The target customer segments encompass digital artists, collectors, and crypto investors. Growth indicators include a large user base, high transaction volumes, and active social media engagement. The partnership ecosystem includes collaborations with platforms like SuperRare and integration with various blockchain networks. Operationally, OpenSea demonstrates strong digital maturity and market leadership, though it could benefit from enhanced security governance and transparency.
Security Posture Analysis
Comprehensive Security Assessment
OpenSea exhibits a mature security posture with enforced HTTPS, robust SSL configuration, and implementation of essential security headers. The absence of DNSSEC is a minor gap in DNS security. No exposed sensitive data or vulnerable libraries were found in the analyzed content. However, the lack of publicly available security policies, incident response contacts, and a vulnerability disclosure program indicates room for improvement in security governance and incident management readiness. Privacy policies and cookie consent mechanisms are comprehensive and GDPR compliant. Overall, the platform maintains a secure environment but should enhance transparency and formalize security processes to align with best practices and regulatory expectations.
Strategic Recommendations
Priority Actions for Security Improvement
Enable DNSSEC to strengthen DNS security and prevent spoofing.
✨Observations
AI-powered comprehensive website and business analysis.
AI-Enhanced Website Analysis
Business Insights
Opensea
OpenSea is a token trading and NFT marketplace platform that allows users to discover, trade, and create onchain digital assets.
excellent
consistent
Technical Stack
fast
excellent
good
good
Security Assessment
- HTTPS enforced
- Client transfer prohibited domain status
- Use of Cloudflare DNS and CDN
- No exposed sensitive data in HTML
- No vulnerable libraries detected in scripts
Analytics & Tracking
Advertising & Marketing
Website Quality Assessment
Key Observations
Website is a professional and leading NFT marketplace platform.
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🛡️Security Headers
HTTP security headers analysis and recommendations.
Security Headers
HTTP security headers analysis
Weak Strict-Transport-Security configuration
LOWCurrent value: "max-age=15552000; includeSubDomains; preload"
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)
Weak Referrer-Policy configuration
LOWCurrent value: "same-origin"
Missing Permissions-Policy header
MEDIUMControls browser features and APIs
👤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
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📧Email Security
SPF, DKIM, and DMARC validation and email security assessment.
Email Security
SPF, DKIM, and DMARC validation
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
SSL Certificate Expires Within 90 Days
MEDIUMSSL certificate expires in 89 days
Weak SSL Key Length
HIGHSSL certificate uses 256-bit key, which is considered weak
Partial SSL/TLS Assessment
LOWCompleted 2 of 4 security checks due to time constraints
Certificate Details
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
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 opensea.io compare?
See how opensea.io 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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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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