Is delekus.com Safe? Security Analysis for Delek US Holdings, Inc.
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Delek US Holdings, Inc. is a large, diversified downstream energy company operating primarily in petroleum refining, asphalt, renewable fuels, and logistics. The company operates multiple refineries in the United States with a significant crude oil refining capacity and is publicly traded on the NYSE. The website demonstrates a mature digital presence with comprehensive corporate, investor, and social responsibility content, supported by a modern technology stack including Q4 Inc's investor relations platform and multimedia integrations. Security posture is generally good with HTTPS and cookie consent mechanisms in place, though explicit security headers and incident response contacts are not evident. The absence of WHOIS data is a notable anomaly that slightly reduces trust but does not outweigh the professional presentation and Fortune 500 status. Overall, the website is well-designed, accessible, and trustworthy for its target audiences including investors, employees, and partners.
Detected Technologies
8 urgent findings need attention
8 high
Keep delekus.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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OffSeq Observations
No critical findings yet
81/100
DNS Health
1 finding
90/100
Email Security
3 findings
85/100
SSL/TLS Security
4 findings
57/100
🧠AI Business Intelligence
Technology stack, business insights, and market analysis powered by AI.
Business Intelligence
Market & Strategic Analysis
The company holds a strong market position as a Fortune 500 energy enterprise with diversified operations spanning refining, commercial trading, logistics, and energy transition initiatives. Its business model focuses on downstream energy products and services, targeting institutional investors, industry analysts, suppliers, and community stakeholders. The presence of dedicated subdomains for investor relations and careers indicates a structured approach to stakeholder engagement. Partnerships and subsidiaries such as Delek Logistics support its operational footprint. The website content and navigation reflect a strategic emphasis on transparency, sustainability, and innovation, positioning Delek US Holdings as a forward-looking energy company.
Security Posture Analysis
Comprehensive Security Assessment
The website employs HTTPS and a cookie consent mechanism, indicating baseline security and privacy compliance. However, the lack of visible security headers such as Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security suggests room for improvement in hardening the web infrastructure. No explicit incident response or abuse contact information is provided, which is a gap in security transparency. The use of third-party tracking via Q4 Tracker is disclosed through cookie consent, aligning with privacy best practices. No vulnerabilities or exposed sensitive data were detected in the HTML content. Overall, the security maturity is moderate with recommendations to enhance header configurations and incident response visibility.
Strategic Recommendations
Priority Actions for Security Improvement
Implement comprehensive HTTP security headers including Content-Security-Policy, X-Frame-Options, and Strict-Transport-Security to improve defense against common web attacks.
✨Observations
Comprehensive website and business-context analysis.
AI-Enhanced Website Analysis
Business Insights
Delek US Holdings, Inc.
Delek US Holdings, Inc. is a diversified downstream energy company specializing in petroleum refining, asphalt, renewable fuels, and logistics. Refining operations are located in Texas, Arkansas, and Louisiana with a combined crude throughput capacity of 302,000 barrels per day. The company emphasizes safe, reliable energy and cleaner, innovative solutions, with a strong commitment to employees and communities.
excellent
consistent
Technical Stack
moderate
good
good
good
Security Assessment
- HTTPS enforced
- Cookie consent banner implemented
- No exposed sensitive data in HTML
Analytics & Tracking
Advertising & Marketing
Website Quality Assessment
Key Observations
Website is fully accessible with rich content and multimedia.
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🛡️Security Headers
HTTP security headers analysis and recommendations.
Security Headers
HTTP security headers analysis
Missing Strict-Transport-Security header
Forces HTTPS connections
Missing X-XSS-Protection header
Legacy XSS protection (deprecated but still recommended)
Weak Referrer-Policy configuration
Current value: "same-origin"
Sensitive data may be cached
Cache-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
GDPR requires clear information about cookie usage
No Data Protection Officer mentioned
Large organizations may need to designate a DPO under GDPR
Privacy policy may not be GDPR compliant
Privacy policy lacks explicit GDPR compliance elements
GDPR Compliance Analysis
🛡️NIS2 Compliance
Network & Information Security Directive compliance assessment.
NIS2 Compliance
Network & Information Security Directive
No information security framework found
NIS2 requires documented cybersecurity and information security measures
No vulnerability disclosure policy
NIS2 encourages coordinated vulnerability disclosure
No security policy documentation found
NIS2 requires documented cybersecurity governance and risk management
No incident response procedures found
NIS2 requires documented incident response and business continuity plans
No business continuity planning found
NIS2 emphasizes operational resilience and business continuity
No security contact information
NIS2 requires clear incident reporting channels
No vulnerability reporting mechanism
Clear vulnerability reporting supports coordinated disclosure
No NIS2 reference found
Consider 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
No BIMI Record
BIMI displays brand logos in email clients
No MTA-STS Policy
MTA-STS enforces TLS for email delivery
No TLS-RPT Record
TLS-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
Server supports weak protocols: TLSv1.1
Certificate Transparency Not Implemented
Certificate is not logged in Certificate Transparency logs
SSL Certificate Expires Within 90 Days
SSL certificate expires in 65 days
Weak SSL Key Length
SSL certificate uses 256-bit key, which is considered weak
Protocol Support
OCSP Status
📊DNS Health
DNS configuration and security assessment.
DNS Health
DNS configuration and security assessment
DNSSEC Not Enabled
DNSSEC is not configured for this domain
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
No unnecessary services detected on common risky ports
How does delekus.com compare?
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🔧Technical Analysis
Detailed technical findings and analysis from AI assessment.
Technical Analysis
Comprehensive security assessment findings
Additional Findings
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