Is crontab.guru Safe? Security Analysis for Cronitor.io
Check if crontab.guru is a scam or legitimate. Free security scan and reviews.
AI Summary
Crontab.guru is a specialized web tool designed to simplify the creation and understanding of cron schedule expressions. It serves primarily developers and system administrators who manage scheduled tasks. The website is closely integrated with Cronitor.io, a company offering cron job monitoring and alerting services, which is promoted throughout the site. Additionally, Crontab.guru offers a free, open source self-hosted dashboard for cron job management, enhancing its value proposition. The business model combines free tooling with promotion of paid monitoring services, positioning itself as a niche but valuable resource in the technology sector. Technically, the website is built using modern web standards including HTML5, CSS3, JavaScript, and SVG graphics. Hosting and DNS are managed via Amazon AWS infrastructure, indicating a reliable and scalable backend. The site is mobile optimized and performs well with good SEO practices. However, there is room for improvement in accessibility and security headers implementation. The site uses a JavaScript-based Real User Monitoring (RUM) script from Cronitor for analytics, reflecting a moderate level of user tracking. From a security perspective, the website enforces HTTPS and uses domain transfer protection status, which are positive indicators. However, it lacks DNSSEC and explicit security headers such as Content Security Policy or HSTS. No privacy or cookie policies are published, and no cookie consent mechanism is present, indicating compliance gaps with GDPR and related privacy regulations. No contact information or incident response channels are provided on the main page, limiting transparency. Overall, Crontab.guru is a trustworthy and professional site with a clear business focus and good technical foundation. To enhance its security posture and compliance, it should implement privacy and cookie policies, add security headers, enable DNSSEC, and provide clear contact and incident response information. These improvements would strengthen user trust and regulatory compliance while maintaining its strong market position in the cron tooling niche.
Detected Technologies
🧠AI Business Intelligence
Technology stack, business insights, and market analysis powered by AI.
Business Intelligence
Market & Strategic Analysis
Crontab.guru operates as a specialized tool within the technology sector, targeting developers and IT professionals managing cron jobs. Its competitive advantage lies in its simplicity, free access, and integration with Cronitor's monitoring services. The business model leverages free tooling to funnel users towards paid monitoring subscriptions, supported by an open source dashboard that encourages community engagement. The partnership ecosystem centers around Cronitor.io, which provides complementary services. Growth indicators include domain longevity since 2015 and consistent branding. The company maintains a lean operation with a small size profile, focusing on niche market penetration rather than broad diversification.
Security Posture Analysis
Comprehensive Security Assessment
The website demonstrates a moderate security maturity level with HTTPS enforced and domain transfer protection enabled. However, the absence of DNSSEC and security headers such as CSP and HSTS represents potential vulnerabilities. No exposed sensitive data or vulnerable libraries were detected. The lack of privacy and cookie policies, as well as missing incident response contact channels, indicates compliance gaps with GDPR and best practices. The use of a proprietary RUM script suggests controlled analytics without third-party trackers. Incident response readiness and security culture indicators are not evident from the public content, suggesting areas for improvement to enhance transparency and user trust.
Strategic Recommendations
Priority Actions for Security Improvement
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
Cronitor.io
An easy to use editor for crontab schedules. The site also offers a free, self-hosted open source dashboard for cron job control and promotes Cronitor's cron job monitoring services.
good
consistent
Technical Stack
fast
good
basic
good
Security Assessment
- HTTPS enforced
- No exposed sensitive data in HTML
- No visible vulnerable libraries
- Use of clientTransferProhibited domain status
Analytics & Tracking
Advertising & Marketing
Website Quality Assessment
Key Observations
Website is a specialized tool for cron schedule expression editing.
🛡️Security Headers
HTTP security headers analysis and recommendations.
Security Headers
HTTP security headers analysis
Missing Strict-Transport-Security header
HIGHForces HTTPS connections
Missing X-Frame-Options header
HIGHPrevents clickjacking attacks
Missing X-Content-Type-Options header
MEDIUMPrevents MIME type sniffing
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 Privacy Policy found
HIGHGDPR requires a clear and accessible privacy policy
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
Critical sector without clear security compliance
HIGHDetected sectors: transport, digital
📧Email Security
SPF, DKIM, and DMARC validation and email security assessment.
Email Security
SPF, DKIM, and DMARC validation
No SPF record found
HIGHSPF helps prevent email spoofing
No DKIM record found
MEDIUMDKIM adds cryptographic signatures to emails
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
No email authentication configured
CRITICALDomain is vulnerable to email spoofing
🏆SSL/TLS Security
Certificate validity and encryption analysis.
SSL/TLS Security
Certificate validity and encryption analysis
Weak Protocols Supported
HIGHServer supports weak protocols: TLSv1.1
Certificate Transparency Not Implemented
LOWCertificate is not logged in Certificate Transparency logs
Partial SSL/TLS Assessment
LOWCompleted 3 of 4 security checks due to time constraints
Protocol Support
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
Domain Delete Lock Not Enabled
LOWDomain can be deleted without additional verification
No DMARC Record
MEDIUMDMARC policy not configured
Domain Registration Details
DNS Records
DNSSEC Status
DNS Performance
⚡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
🔧Technical Analysis
Detailed technical findings and analysis from AI assessment.
Technical Analysis
Comprehensive security assessment findings