Is calendly.com Safe? Security Analysis for Calendly
https://calendly.comCheck if calendly.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
Calendly is a leading SaaS provider specializing in online appointment scheduling software, serving over 20 million professionals and a significant portion of Fortune 500 companies. The platform offers seamless calendar integrations, customizable event types, and automated meeting reminders, positioning itself as a market leader in scheduling solutions. The website reflects a mature, enterprise-grade service with a strong brand presence and comprehensive content tailored to professionals and businesses of all sizes. Technically, Calendly employs a modern web stack including React and Next.js, supported by Cloudflare DNS and various marketing and analytics tools such as Google Tag Manager, FullStory, and Marketo. The site is optimized for performance, mobile responsiveness, and accessibility, demonstrating a high level of digital maturity. From a security perspective, Calendly enforces HTTPS, implements key security headers, and maintains certifications like SOC 2 Type II and ISO 27001, indicating a robust security posture. However, DNSSEC is not enabled, and there is no public security.txt or explicit incident response contact, which are areas for improvement. Overall, Calendly presents a low-risk profile with strong business credibility, technical sophistication, and good privacy compliance. Strategic enhancements in DNS security and incident response transparency would further strengthen its security and trustworthiness.
Detected Technologies
9 urgent findings need attention
9 high
- + 1 more findings in the full report below
Keep calendly.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
40/100
GDPR Compliance
2 findings
70/100
NIS2 Compliance
8 findings
17/100
Email Security
2 findings
87/100
🧠AI Business Intelligence
Technology stack, business insights, and market analysis powered by AI.
Business Intelligence
Market & Strategic Analysis
Calendly operates in the technology sector with a SaaS business model focused on scheduling and productivity tools. Its competitive advantage lies in ease of use, extensive integrations, and enterprise adoption. Revenue streams likely include subscription fees from individual and enterprise customers. The target market spans individuals, small businesses, and large enterprises, with a notable presence in Fortune 500 companies. The company maintains a broad partnership ecosystem, integrating with major conferencing and calendar platforms. Growth indicators include a large user base and continuous feature expansion. The website content and branding reinforce a professional and trustworthy image, supporting strong market positioning.
Security Posture Analysis
Comprehensive Security Assessment
Calendly demonstrates a mature security posture with HTTPS enforcement, comprehensive security headers, and recognized certifications (SOC 2, ISO 27001). The absence of DNSSEC and a public security.txt file are minor gaps. No exposed sensitive data or vulnerable libraries were detected in the website content. Privacy policies and cookie consent mechanisms are in place, supporting GDPR compliance. Incident response contact details are not explicitly provided, which could hinder rapid communication during security events. Overall, the security culture appears strong but could benefit from enhanced transparency and DNS security measures.
Strategic Recommendations
Priority Actions for Security Improvement
Enable DNSSEC to protect against DNS spoofing and improve domain security.
✨Observations
AI-powered comprehensive website and business analysis.
AI-Enhanced Website Analysis
Business Insights
Calendly
Calendly is the modern scheduling platform that makes “finding time” a breeze. When connecting is easy, your teams can get more done.
excellent
consistent
Technical Stack
fast
excellent
good
good
Security Assessment
- HTTPS enforced
- Security headers present
- No exposed sensitive data in HTML
- Use of reputable third-party security and analytics tools
Analytics & Tracking
Advertising & Marketing
Website Quality Assessment
Key Observations
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
Missing X-Frame-Options header
HIGHPrevents clickjacking attacks
Missing Content-Security-Policy header
HIGHControls resources the browser is allowed to load
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
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 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
SSL Certificate Expires Within 90 Days
MEDIUMSSL certificate expires in 68 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
DNSSEC Not Enabled
MEDIUMDNSSEC is not configured for this domain
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 calendly.com compare?
See how calendly.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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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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