Is stackup.sh Safe? Security Analysis for stackup.sh | 525: SSL handshake failed
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AI Summary
The website stackup.sh is currently inaccessible due to a Cloudflare SSL handshake failure (Error 525), indicating a misconfiguration or incompatibility between Cloudflare and the origin server's SSL setup. As a result, the site content is blocked and only an error page is served. No business, contact, or policy information is available on the page, severely limiting the ability to assess the company's operations or compliance posture. The technical infrastructure relies on Cloudflare as a CDN and security provider, but the origin server's SSL issues prevent proper secure access. Security posture is weak due to lack of visible security headers and policies. Overall, the site is non-functional and lacks any meaningful content or trust indicators.
Detected Technologies
🧠AI Business Intelligence
Technology stack, business insights, and market analysis powered by AI.
Business Intelligence
Market & Strategic Analysis
Due to the lack of accessible content and absence of business information, no meaningful business intelligence can be derived. The domain appears to be small scale or early stage, but no details on market positioning, services, or partnerships are available. The only external domain referenced is cloudflare.com, which is related to the CDN and security service used. No contact emails, phone numbers, or social media links are present to indicate active business operations or customer engagement.
Security Posture Analysis
Comprehensive Security Assessment
The security posture is currently poor. The SSL handshake failure prevents secure HTTPS connections end-to-end, which is a critical issue. No security headers or policies are present on the error page. No incident response or vulnerability disclosure information is available. The site is protected by Cloudflare, but the origin server SSL misconfiguration negates this benefit. There is no evidence of GDPR compliance or privacy protections. Overall, the site is vulnerable to service disruption and lacks transparency on security practices.
Strategic Recommendations
Priority Actions for Security Improvement
Resolve the SSL handshake failure by configuring the origin server SSL certificate and cipher suites to be compatible with Cloudflare.
✨Observations
AI-powered comprehensive website and business analysis.
AI-Enhanced Website Analysis
Cloudflare Detected
The website is showing a Cloudflare 525 SSL handshake failed error page indicating the origin server SSL is misconfigured or unreachable. Content is blocked by Cloudflare.
Analysis results may be incomplete. For accurate analysis, please contact guard@offseq.com
Business Insights
poor
inconsistent
Technical Stack
poor
Security Assessment
Analytics & Tracking
Advertising & Marketing
Website Quality Assessment
Key Observations
Website content is inaccessible due to Cloudflare SSL handshake failure (Error 525).
🛡️Security Headers
HTTP security headers analysis and recommendations.
Security Headers
HTTP security headers analysis
👤GDPR Compliance
Privacy and data protection assessment under GDPR regulations.
GDPR Compliance
Privacy and data protection assessment
No Privacy Policy found
HIGHGDPR requires a clear and accessible privacy policy
No Cookie Policy found
HIGHGDPR requires clear information about cookie usage
No Cookie Consent Banner found
HIGHGDPR requires explicit consent for non-essential cookies
Third-party services without privacy policy
HIGHDetected services: Cloudflare
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
Critical sector without clear security compliance
HIGHDetected sectors: transport, digital
📧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 DKIM record found
MEDIUMDKIM adds cryptographic signatures to emails
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
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 85 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
Unregistered MX Record
HIGHMX record points to unregistered domain: 7rkn47okjtuaio2p62izzogcu4vodlf3jwtyb7kd3ofdlridpxxa.mx-verification.google.com
DNSSEC Not Enabled
MEDIUMDNSSEC is not configured for this domain
CAA Records Not Configured
LOWCertificate Authority Authorization (CAA) records not found
Potential Subdomain Takeover
HIGHSubdomain api.stackup.sh points to unregistered service ag-8080-1491798611.us-east-1.elb.amazonaws.com
Invalid SPF Record
MEDIUMSPF record syntax is invalid
DMARC Policy Set to None
LOWDMARC is configured but not enforcing any policy
DNS Records
DNSSEC Status
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
🔧Technical Analysis
Detailed technical findings and analysis from AI assessment.
Technical Analysis
Comprehensive security assessment findings