What features do crt.sh vs Cylana EASM offer?

**crt.sh** differentiates with Subdomain enumeration via certificate transparency logs, Automated querying of crt.sh website, Parsing and filtering of crt.sh output. **Cylana EASM** differentiates with Domain discovery and tracking, Subdomain discovery and tracking, AI-powered digital asset analysis.

Is crt.sh a good alternative to Cylana EASM?

crt.sh and Cylana EASM serve similar External Attack Surface Management use cases: both are External Attack Surface Management tools, both cover Subdomain Enumeration, Reconnaissance, Security Scanning. Key differences: crt.sh is Free while Cylana EASM is Commercial. Review the feature comparison above to determine which fits your requirements.

crt.sh vs Cylana EASM: 2026 Comparison Guide | CybersecTools

crt.sh vs Cylana EASM: Side-by-Side Comparison (2026)

Q: What is the difference between crt.sh vs Cylana EASM?

**crt.sh**: Bash script for subdomain enumeration via crt.sh certificate transparency logs. Core capabilities include Subdomain enumeration via certificate transparency logs, Automated querying of crt.sh website, Parsing and filtering of crt.sh output.. **Cylana EASM**: AI-powered EASM platform for digital asset discovery and monitoring. built by Cylana. Core capabilities include Domain discovery and tracking, Subdomain discovery and tracking, AI-powered digital asset analysis.. Both serve the External Attack Surface Management market but differ in approach, feature depth, and target audience.

Features, pricing, ratings, and pros & cons — compared head-to-head.

crt.sh is a free external attack surface management tool. Cylana EASM is a commercial external attack surface management tool by Cylana. Compare features, ratings, integrations, and community reviews side by side to find the best external attack surface management fit for your security stack.

CST Verdict

Based on our analysis of NIST CSF 2.0 coverage, core features, integrations, company size fit, here is our conclusion:

crt.sh

Security teams doing threat intelligence or domain monitoring should use crt.sh as a free, fast way to spot certificate issuance anomalies that signal domain takeover or phishing campaigns before they scale. Certificate Transparency logs index roughly 15 billion certificates, giving you real-time visibility into what's been legitimately issued against your domains and competitors' infrastructure. Skip this if you need automated alerting or integration into your SIEM; crt.sh is a lookup tool, not a monitoring platform, and catching malicious certificates requires manual checks or custom scripting.

Data verified May 2026