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Is userstack.com a Scam? Security Check Results - userstack

userstack.com Security Report Summary

userstack.com received a security score of 66 out of 100 in Guard's comprehensive security analysis, classified as "Moderate Risk". This report covers userstack's website security posture. userstack operates in the Technology industry in N/a.

userstack is a technology company specializing in providing a real-time User-Agent lookup and device detection API service. Established in 2011, it offers scalable and accurate user-agent parsing solutions trusted by thousands of customers worldwide, including major brands such as Amazon, Apple, and Zendesk. The company operates a freemium business model with free API access and tiered paid plans, targeting developers and businesses requiring device and browser detection capabilities. The website demonstrates strong branding consistency and professional content quality, with extensive code examples and clear calls to action.

The security scan identified 28 findings across security headers, SSL/TLS, DNS health, email security, GDPR compliance, and NIS2 compliance analysis modules.

Technologies detected: HTML5, CSS3, JavaScript, Google Tag Manager, Stripe (payment processing), Cloudflare (DNS and CDN), jQuery, Google reCAPTCHA.

About this security scan

Guard performs automated security assessments of websites by analyzing SSL/TLS certificates, HTTP security headers, DNS configuration, email authentication protocols (SPF, DKIM, DMARC), GDPR compliance indicators, NIS2 directive compliance, network exposure, and AI-powered business intelligence. Each report provides domain-specific findings, risk scores, and actionable recommendations.

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Is userstack.com Safe? Security Analysis for userstack

https://userstack.com

Check if userstack.com is a scam or legitimate. Free security scan and reviews.

TechnologyN/asmall
HTML5CSS3JavaScriptGoogle Tag ManagerStripe (payment processing)+3 more
Analyzed 10/17/2025Completed 8:55:09 PM6mo ago
66
Security Score
MEDIUM RISK

Below Technology avg (72)

10,000+

Domains scanned

500+

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SEQ SIA

Lastadijas 12 k-3, Riga, Latvia, LV-1050

Reg. No. 40203410806 • VAT LV40203410806

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AI Summary

userstack is a technology company specializing in providing a real-time User-Agent lookup and device detection API service. Established in 2011, it offers scalable and accurate user-agent parsing solutions trusted by thousands of customers worldwide, including major brands such as Amazon, Apple, and Zendesk. The company operates a freemium business model with free API access and tiered paid plans, targeting developers and businesses requiring device and browser detection capabilities. The website demonstrates strong branding consistency and professional content quality, with extensive code examples and clear calls to action.

Detected Technologies

HTML5CSS3JavaScriptGoogle Tag ManagerStripe (payment processing)Cloudflare (DNS and CDN)jQueryGoogle reCAPTCHA

8 urgent findings need attention

8 high

Continuous monitoring

Keep userstack.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

2 findings

73/100

NIS2 Compliance

9 findings

2/100

Email Security

4 findings

70/100

🧠AI Business Intelligence

Technology stack, business insights, and market analysis powered by AI.

Business Intelligence

Market & Strategic Analysis

userstack holds a solid market position as a niche API provider within the developer tools sector. Its competitive advantages include a highly accurate and constantly updated user-agent database, seamless integration via a simple JSON REST API, and a scalable cloud infrastructure. Revenue streams are primarily subscription-based, with a free tier to attract new users. The company benefits from a partnership or parent relationship with apilayer, which provides a broader API marketplace and affiliate program. The target customer segments are developers, SaaS companies, and enterprises needing device detection. Growth indicators include a mature domain age and presence of major client logos. Strategic partnerships with apilayer enhance its ecosystem and market reach.

Security Posture Analysis

Comprehensive Security Assessment

The website enforces HTTPS and uses Cloudflare for DNS and CDN services, providing a strong baseline for security. Security best practices observed include the use of Google reCAPTCHA on forms to prevent abuse and domain status flags to prevent unauthorized domain changes. However, DNSSEC is not enabled, representing a minor security gap. No explicit security policy or incident response information is published, and no vulnerability disclosure or security.txt file is found, which could be improved to enhance transparency and trust. No vulnerabilities or exposed sensitive data were detected in the HTML content. Overall, the security posture is good but could benefit from more explicit security documentation and DNSSEC implementation.

Strategic Recommendations

Priority Actions for Security Improvement

1

Enable DNSSEC on the domain to improve DNS security and prevent spoofing.

Observations

AI-powered comprehensive website and business analysis.

AI-Enhanced Website Analysis

Business Insights

Company:

userstack

Description:

userstack provides a lightweight User-Agent lookup JSON and XML API for real-time device, browser, and OS detection.

Key Services:
User-Agent lookup APIDevice detectionBrowser detectionOperating system detection
Content Quality:

excellent

Branding:

consistent

Technical Stack

Technologies:
HTML5CSS3JavaScriptGoogle Tag ManagerStripe (payment processing)Cloudflare (DNS and CDN)jQueryGoogle reCAPTCHA
Performance:

fast

Mobile:

excellent

Accessibility:

good

SEO:

good

Security Assessment

Security Score:
85/100
Best Practices:
  • HTTPS enforced
  • Use of Google reCAPTCHA on forms
  • No exposed sensitive data in HTML
  • Domain status includes clientDeleteProhibited etc. to prevent unauthorized changes

Analytics & Tracking

Services:
Google Analytics (via Google Tag Manager)
Tracking Level:moderate
Privacy Compliance:good

Advertising & Marketing

Ad Networks:
Reddit Ads
Tracking Pixels:
Cookie Script
Marketing Tools:
FirstPromoter
Transparency Level:good

Website Quality Assessment

Design Quality:excellent
User Experience:excellent
Content Relevance:excellent
Navigation Clarity:excellent
Professionalism:excellent
Trustworthiness:high

Key Observations

1

Website offers a specialized API service for user-agent parsing and device detection.

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🛡️Security Headers

HTTP security headers analysis and recommendations.

Security Headers

HTTP security headers analysis

45/100
Score

Weak Strict-Transport-Security configuration

LOW

Current value: "max-age=0; includeSubDomains"

Missing X-Content-Type-Options header

MEDIUM

Prevents MIME type sniffing

Missing Content-Security-Policy header

HIGH

Controls resources the browser is allowed to load

Missing X-XSS-Protection header

MEDIUM

Legacy XSS protection (deprecated but still recommended)

Missing Referrer-Policy header

LOW

Controls referrer information sent with requests

Missing Permissions-Policy header

MEDIUM

Controls browser features and APIs

👤GDPR Compliance

Privacy and data protection assessment under GDPR regulations.

GDPR Compliance

Privacy and data protection assessment

73/100
Score

No Cookie Consent Banner found

HIGH

GDPR requires explicit consent for non-essential cookies

Privacy policy may not be GDPR compliant

MEDIUM

Privacy policy lacks explicit GDPR compliance elements

GDPR Compliance Analysis

Privacy Policy85% confidence
Cookie Policy85% confidence
Contact Information Found90% confidence
phone

🛡️NIS2 Compliance

Network & Information Security Directive compliance assessment.

NIS2 Compliance

Network & Information Security Directive

2/100
Score

No information security framework found

HIGH

NIS2 requires documented cybersecurity and information security measures

No vulnerability disclosure policy

MEDIUM

NIS2 encourages coordinated vulnerability disclosure

No security policy documentation found

HIGH

NIS2 requires documented cybersecurity governance and risk management

No incident response procedures found

HIGH

NIS2 requires documented incident response and business continuity plans

No business continuity planning found

MEDIUM

NIS2 emphasizes operational resilience and business continuity

No security contact information

HIGH

NIS2 requires clear incident reporting channels

No vulnerability reporting mechanism

MEDIUM

Clear vulnerability reporting supports coordinated disclosure

No NIS2 reference found

LOW

Consider explicitly mentioning NIS2 compliance efforts

Critical sector without clear security compliance

HIGH

Detected sectors: energy, transport, banking, digital

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📧Email Security

SPF, DKIM, and DMARC validation and email security assessment.

Email Security

SPF, DKIM, and DMARC validation

70/100
Score

No DKIM record found

MEDIUM

DKIM adds cryptographic signatures to emails

No BIMI Record

LOW

BIMI displays brand logos in email clients

No MTA-STS Policy

MEDIUM

MTA-STS enforces TLS for email delivery

No TLS-RPT Record

LOW

TLS-RPT provides reporting for email TLS issues

SPF
Sender Policy Framework
DKIM
DomainKeys Identified Mail
DMARC
Domain-based Message Authentication
MX Records
Mail Exchange Records
BIMI
Brand Indicators
MTA-STS
Mail Transfer Agent Security
TLS-RPT
TLS Reporting
DNSSEC
DNS Security
SPF Details
Record:
v=spf1 include:zoho.eu include:mail.zendesk.com ~all
DNS Lookups:2/10
Policy:~all

🏆SSL/TLS Security

Certificate validity and encryption analysis.

SSL/TLS Security

Certificate validity and encryption analysis

75/100
Score

SSL Certificate Expires Within 90 Days

MEDIUM

SSL certificate expires in 33 days

Weak SSL Key Length

HIGH

SSL certificate uses 256-bit key, which is considered weak

Partial SSL/TLS Assessment

LOW

Completed 2 of 4 security checks due to time constraints

Certificate Details

Subject:userstack.com
Issuer:E8
Valid Until:11/20/2025 (33 days)
SANs:*.userstack.com, userstack.com

OCSP Status

OCSP Stapling Disabled

📊DNS Health

DNS configuration and security assessment.

DNS Health

DNS configuration and security assessment

75/100
Score

DNSSEC Not Enabled

MEDIUM

DNSSEC is not configured for this domain

CAA Records Not Configured

LOW

Certificate Authority Authorization (CAA) records not found

No DMARC Record

MEDIUM

DMARC policy not configured

DNS Records

A Records:188.114.96.1, 188.114.97.1
AAAA Records:2606:4700:3035::ac43:88d1, 2606:4700:3037::6815:4ec5
Name Servers:
abby.ns.cloudflare.comDNS only
ram.ns.cloudflare.comDNS only
MX Records:
10: aspmx.l.google.com
20: alt1.aspmx.l.google.com
50: alt2.aspmx.l.google.com
60: alt3.aspmx.l.google.com
70: alt3.aspmx.l.google.com
SOA:Serial: 2385495533, TTL: 1800s

DNSSEC Status

DNSSEC Not Enabled

DNS Performance

Resolution Time:83ms

SPF Analysis

SPF Record:
v=spf1 include:zoho.eu include:mail.zendesk.com ~all

Network Security

Port scanning and network exposure analysis.

Network Security

Port scanning and network exposure analysis

100/100
Score

Good Network Security Posture

LOW

No unnecessary services detected on common risky ports

How does userstack.com compare?

See how userstack.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

The website is built with modern web technologies including HTML5, CSS3, and JavaScript, leveraging Google Tag Manager for analytics and Stripe for payment processing. It uses Cloudflare for DNS and CDN, enhancing performance and security. The site is mobile-optimized with responsive design and good accessibility features. SEO is well addressed with proper meta tags and structured content. The presence of multiple code examples in various programming languages demonstrates technical maturity and developer focus. No CMS was detected, indicating a custom or proprietary platform. Performance is fast, and the site shows no signs of technical debt or outdated libraries. Opportunities exist to improve security documentation and DNS configuration.
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PDF Report & Export

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39.90 €one-time • Incl. 21% VAT

Marketing Intelligence

Contact emails, phone numbers & warm leads

49.90 €one-time • Incl. 21% VAT

Plan Comparison

FeaturePDF ReportMarketing+
Full security analysis
Professional PDF export
Email delivery
Lifetime access + unlock code
Contact emails & phones
Marketing outreach data

Already purchased?

Order summary

Domainuserstack.com
Access tierFull report or marketing add-on

Digital reports are delivered immediately after payment. By continuing you acknowledge the withdrawal waiver described in our Returns & Refunds policy.

VisaMastercardApple PayGoogle Pay

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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