Is similarweb.com Safe? Security Analysis for Similarweb Ltd.
https://similarweb.comCheck if similarweb.com is a scam or legitimate. Free security scan and reviews.
Below 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
Similarweb Ltd. operates a sophisticated AI-powered digital data intelligence platform that delivers real-time market intelligence, competitive insights, and consumer trend analysis to a broad audience of business professionals, marketers, investors, and researchers. Positioned as a leader in the digital analytics and market intelligence sector, Similarweb offers a comprehensive suite of services including web intelligence, sales intelligence, app intelligence, and data-as-a-service solutions. Their platform supports strategic decision-making and business growth through actionable digital insights. Technically, the website leverages a modern technology stack centered on React 17, integrated with advanced analytics tools such as Google Analytics (GA4) and Matomo, and employs robust privacy and consent management via Cookiebot. Hosting infrastructure appears to be secured and scalable, utilizing AWS services with Web Application Firewall (WAF) protections. The site demonstrates excellent performance, mobile optimization, and SEO practices, reflecting a mature digital presence. From a security perspective, Similarweb enforces HTTPS, employs security best practices including consent management and script integrity, and shows no signs of exposed sensitive data or vulnerabilities. However, explicit security headers like X-Frame-Options and X-Content-Type-Options were not confirmed and could be audited further. The absence of a public vulnerability disclosure policy is noted as an area for improvement. Overall, the website presents a low-risk profile with strong business credibility and technical maturity. The lack of WHOIS transparency due to privacy protection is typical for enterprises but slightly reduces trustworthiness. Strategic recommendations include enhancing security header implementation, establishing a public vulnerability disclosure channel, and maintaining rigorous third-party script audits to sustain security and compliance.
Detected Technologies
9 urgent findings need attention
1 critical · 8 high
- + 1 more findings in the full report below
Keep similarweb.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
6 findings
45/100
GDPR Compliance
3 findings
58/100
NIS2 Compliance
8 findings
17/100
Email Security
3 findings
85/100
🧠AI Business Intelligence
Technology stack, business insights, and market analysis powered by AI.
Business Intelligence
Market & Strategic Analysis
Similarweb holds a strong market position as a leading provider of digital market intelligence and analytics solutions. Its SaaS business model targets enterprise clients seeking competitive insights and consumer behavior data to optimize marketing, sales, and investment decisions. The company’s ecosystem includes integrations with major platforms and a broad partner network evidenced by verified social media presence and industry recognition. The platform’s comprehensive service offerings and data-driven approach support diverse customer segments, including agencies, investors, and digital marketers. Growth indicators include continuous product innovation, AI integration, and expansion into app intelligence. The company maintains a consistent brand image and high-quality content, reinforcing its credibility and market leadership.
Security Posture Analysis
Comprehensive Security Assessment
The security posture of Similarweb’s website is robust, featuring HTTPS encryption, use of AWS WAF, and compliance with GDPR through cookie consent mechanisms. The site avoids exposing sensitive information and uses reputable analytics and tracking services with user consent. While core security headers are likely implemented, explicit confirmation is recommended. No vulnerabilities or suspicious scripts were detected in the provided content. The absence of a dedicated security policy or incident response contact is a gap that could be addressed to enhance transparency and readiness. Overall, the security maturity aligns with enterprise standards, supporting trust and data protection obligations.
Strategic Recommendations
Priority Actions for Security Improvement
Conduct a security header audit to ensure all recommended headers (X-Frame-Options, X-Content-Type-Options, Content-Security-Policy) are properly configured.
✨Observations
AI-powered comprehensive website and business analysis.
AI-Enhanced Website Analysis
Business Insights
Similarweb Ltd.
Similarweb is an AI-powered digital data company providing real-time market intelligence, competitive insights, and consumer trends to accelerate business growth.
excellent
consistent
Technical Stack
fast
excellent
good
excellent
Security Assessment
- HTTPS enforced
- Cookie consent with region-based GDPR compliance
- Use of AWS WAF for protection
- No exposed sensitive data in HTML
- Use of modern JS libraries with integrity
Analytics & Tracking
Advertising & Marketing
Website Quality Assessment
Key Observations
Website is fully accessible with no blocking or WAF challenge
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🛡️Security Headers
HTTP security headers analysis and recommendations.
Security Headers
HTTP security headers analysis
Missing X-Frame-Options header
HIGHPrevents clickjacking attacks
Missing X-Content-Type-Options header
MEDIUMPrevents MIME type sniffing
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
Privacy policy may not be GDPR compliant
MEDIUMPrivacy 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
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
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
Unable to retrieve SSL certificate
CRITICALCould not establish secure connection to retrieve certificate information
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
Potential Subdomain Takeover
HIGHSubdomain ftp.similarweb.com points to unregistered service s-d3cfc6eb1d9e46fe8.server.transfer.us-east-1.amazonaws.com
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 similarweb.com compare?
See how similarweb.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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