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Is duo.com a Scam? Security Check Results - Duo Security

duo.com Security Report Summary

duo.com received a security score of 80 out of 100 in Guard's comprehensive security analysis, classified as "Safe". This report covers Duo Security's website security posture. Duo Security operates in the Technology industry in United States.

Duo Security, a Cisco company founded in 2009 and headquartered in Ann Arbor, Michigan, specializes in identity security and multi-factor authentication solutions. The company offers a comprehensive suite of products including MFA, Single Sign-On, Passwordless Authentication, Device Trust, and Identity Intelligence, targeting enterprises, SMBs, government agencies, and managed service providers. Duo Security holds a strong market position as a leading provider in identity security, leveraging Cisco's global presence and resources. The website reflects a mature, professional business with clear branding and consistent messaging. Technically, the site is hosted on Amazon AWS infrastructure, employs modern web technologies, and integrates advanced analytics and consent management tools, ensuring good performance, mobile optimization, and accessibility. Security posture is robust with HTTPS enforcement, security headers, and no visible vulnerabilities, although DNSSEC is not enabled, which is recommended for enhanced DNS security. Privacy compliance is well addressed with comprehensive privacy and cookie policies and active consent mechanisms. Contact information and social media presence are transparent and verified, enhancing business credibility. Overall, the website demonstrates a high level of digital maturity and trustworthiness, suitable for its enterprise audience.

The security scan identified 21 findings across security headers, SSL/TLS, DNS health, email security, GDPR compliance, and NIS2 compliance analysis modules.

Technologies detected: JavaScript, CSS, HTML5, JSON-LD, Sentry (error tracking), OneTrust (cookie consent), Wistia (video player), Cisco Tealium Tag Manager.

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 duo.com Safe? Security Analysis for Duo Security

https://duo.com

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

TechnologyUnited Statesmedium
JavaScriptCSSHTML5JSON-LDSentry (error tracking)+3 more
Analyzed 7/25/2025Completed 6:48:09 PM8mo ago
80
Security Score
LOW RISK

Above 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

Support: guard@offseq.com+371 2256 5353

AI Summary

Duo Security, a Cisco company founded in 2009 and headquartered in Ann Arbor, Michigan, specializes in identity security and multi-factor authentication solutions. The company offers a comprehensive suite of products including MFA, Single Sign-On, Passwordless Authentication, Device Trust, and Identity Intelligence, targeting enterprises, SMBs, government agencies, and managed service providers. Duo Security holds a strong market position as a leading provider in identity security, leveraging Cisco's global presence and resources. The website reflects a mature, professional business with clear branding and consistent messaging. Technically, the site is hosted on Amazon AWS infrastructure, employs modern web technologies, and integrates advanced analytics and consent management tools, ensuring good performance, mobile optimization, and accessibility. Security posture is robust with HTTPS enforcement, security headers, and no visible vulnerabilities, although DNSSEC is not enabled, which is recommended for enhanced DNS security. Privacy compliance is well addressed with comprehensive privacy and cookie policies and active consent mechanisms. Contact information and social media presence are transparent and verified, enhancing business credibility. Overall, the website demonstrates a high level of digital maturity and trustworthiness, suitable for its enterprise audience.

Detected Technologies

JavaScriptCSSHTML5JSON-LDSentry (error tracking)OneTrust (cookie consent)Wistia (video player)Cisco Tealium Tag Manager

4 urgent findings need attention

4 high

Continuous monitoring

Keep duo.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

4 findings

65/100

GDPR Compliance

1 finding

88/100

NIS2 Compliance

6 findings

47/100

Email Security

4 findings

80/100

🧠AI Business Intelligence

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

Business Intelligence

Market & Strategic Analysis

Duo Security operates a SaaS business model focused on cybersecurity solutions, particularly identity and access management. Its revenue streams likely include subscription fees for various editions of its products, as indicated by pricing tiers on the website. The company targets a broad customer base including small to medium businesses, large enterprises, government entities, and MSPs, reflecting a diversified market approach. Strategic advantages include Cisco's backing, a comprehensive product portfolio, and strong brand recognition. The company maintains a well-structured resource and support ecosystem, facilitating customer engagement and retention. Growth indicators include new product offerings and active content updates. The partnership ecosystem is anchored by Cisco, with no other subsidiaries or partners explicitly listed on the site. The website's professional design and comprehensive content support effective market positioning and customer acquisition.

Extracted Contact Information

Marketing Intelligence Data

Security Posture Analysis

Comprehensive Security Assessment

Duo Security's website exhibits a mature security posture with HTTPS enforced site-wide, presence of key security headers such as Strict-Transport-Security, X-Frame-Options, and Content-Security-Policy, and no exposed sensitive data in the HTML content. The use of reputable third-party services for error tracking (Sentry) and consent management (OneTrust) further supports security and compliance. However, the absence of DNSSEC implementation is a minor gap in DNS security. No explicit security policy or incident response information is found on the site, nor is there a vulnerability disclosure or security.txt file, which are recommended best practices for transparency and incident handling. Overall, the site is secure for visitors and customers, with room for improvement in public security communications and DNS security.

Strategic Recommendations

Priority Actions for Security Improvement

1

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

Observations

AI-powered comprehensive website and business analysis.

AI-Enhanced Website Analysis

Business Insights

Company:

Duo Security

Description:

Duo Security offers solutions to protect organizations from identity threats. Explore Duo identity security, phishing-resistant MFA, and other solutions.

Key Services:
Multi-Factor Authentication (MFA)Single Sign-On (SSO)Passwordless AuthenticationDevice TrustIdentity IntelligenceIdentity Threat Detection and Response
Content Quality:

excellent

Branding:

consistent

Technical Stack

Technologies:
JavaScriptCSSHTML5JSON-LDSentry (error tracking)OneTrust (cookie consent)Wistia (video player)Cisco Tealium Tag Manager
Performance:

fast

Mobile:

excellent

Accessibility:

good

SEO:

good

Security Assessment

Security Score:
90/100
Best Practices:
  • HTTPS enforced
  • No exposed sensitive data in HTML
  • Use of security headers
  • Cookie consent mechanism implemented

Analytics & Tracking

Services:
Tealium
Tracking Level:moderate
Privacy Compliance:good

Advertising & Marketing

Tracking Pixels:
SentryTealium
Marketing Tools:
OneTrust Cookie ConsentTealium Tag Manager
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 is fully accessible with no blocking or WAF challenges.

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🛡️Security Headers

HTTP security headers analysis and recommendations.

Security Headers

HTTP security headers analysis

65/100
Score

Missing X-Frame-Options header

HIGH

Prevents clickjacking attacks

Weak Referrer-Policy configuration

LOW

Current value: "no-referrer-when-downgrade"

Missing Permissions-Policy header

MEDIUM

Controls browser features and APIs

Sensitive data may be cached

LOW

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

88/100
Score

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

47/100
Score

No vulnerability disclosure policy

MEDIUM

NIS2 encourages coordinated vulnerability disclosure

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

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📧Email Security

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

Email Security

SPF, DKIM, and DMARC validation

80/100
Score

Complex SPF record

LOW

Too many include statements can cause lookup limits

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 ip4:72.35.40.113/28 ip4:66.51.154.240/29 include:_spf.google.com include:_spf.salesforce.com include:mktomail.com include:stspg-customer.com include:_spf.intacct.com include:servers.mcsv.net ~all
DNS Lookups:6/10
Policy:~all
DKIM Selectors Found
Selector:google(1296-bit rsa)
Selector:k1(1296-bit rsa)
Selector:s1(1440-bit rsa)
DMARC Details
Policy:reject
Subdomain Policy:reject
Aggregate Reports:thknwdkw@ag.dmarcian.com
Forensic Reports:thknwdkw@fr.dmarcian.com

🏆SSL/TLS Security

Certificate validity and encryption analysis.

SSL/TLS Security

Certificate validity and encryption analysis

82/100
Score

Weak Protocols Supported

HIGH

Server supports weak protocols: TLSv1.1

Certificate Transparency Not Implemented

LOW

Certificate is not logged in Certificate Transparency logs

Partial SSL/TLS Assessment

LOW

Completed 3 of 4 security checks due to time constraints

Protocol Support

TLSv1.3TLSv1.2TLSv1.1

OCSP Status

OCSP Stapling Enabled

📊DNS Health

DNS configuration and security assessment.

DNS Health

DNS configuration and security assessment

85/100
Score

DNSSEC Not Enabled

MEDIUM

DNSSEC is not configured for this domain

CAA Records Not Configured

LOW

Certificate Authority Authorization (CAA) records not found

DNS Records

A Records:18.165.122.111, 18.165.122.55, 18.165.122.56, 18.165.122.78
Name Servers:
ns-1365.awsdns-42.orgDNS only
ns-1733.awsdns-24.co.ukDNS only
ns-55.awsdns-06.comDNS only
ns-932.awsdns-52.netDNS only
MX Records:
30: aspmx5.googlemail.com
30: aspmx2.googlemail.com
30: aspmx4.googlemail.com
10: aspmx.l.google.com
20: alt2.aspmx.l.google.com
20: alt1.aspmx.l.google.com
30: aspmx3.googlemail.com
SOA:Serial: 1, TTL: 86400s

DNSSEC Status

DNSSEC Not Enabled

DNS Performance

Resolution Time:101ms

SPF Analysis

SPF Record:
v=spf1 ip4:72.35.40.113/28 ip4:66.51.154.240/29 include:_spf.google.com include:_spf.salesforce.com include:mktomail.com include:stspg-customer.com include:_spf.intacct.com include:servers.mcsv.net ~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 duo.com compare?

See how duo.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 using modern web standards including HTML5, CSS, and JavaScript, with integration of JSON-LD structured data for SEO and business information. Hosting is provided via Amazon AWS, indicated by the DNS nameservers. The site uses Cisco's Tealium Tag Manager for analytics and tracking, OneTrust for cookie consent management, Wistia for video content, and Sentry for error monitoring. Performance is optimized with asynchronous script loading and responsive design for mobile devices. Accessibility features such as skip navigation links and ARIA attributes are present, supporting usability. No CMS is explicitly detected, suggesting a custom or proprietary platform. The technical implementation is robust, with good SEO and security practices, though enabling DNSSEC and publishing additional security documentation would further strengthen the technical posture.
Professional PDF & Marketing Data

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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

Domainduo.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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