# Changelog of CT Subdomain Finder & New Certificate Alerts · SiteVerdict (`siteverdict/siteverdict-ct-subdomain-monitor`) Actor

- **URL**: https://apify.com/siteverdict/siteverdict-ct-subdomain-monitor/changelog.md
- **Full Actor documentation**: https://apify.com/siteverdict/siteverdict-ct-subdomain-monitor.md

## Changelog

### 1.0.0 (11 Oct 2026)

- First release: subdomain inventory from Certificate Transparency via crt.sh (free) or Cert Spotter (user key).
- Wildcard rows and "covered by wildcard" flag; first/last seen, latest expiry, issuers, certificate counts.
- DNS liveness (A/AAAA/CNAME) and dangling-CNAME takeover hints (DNS-only, passive).
- Monitor mode: new/removed hosts per domain, only-new output, Slack/webhook alerts.
- Polite crt.sh usage: one query per domain, long timeout, 3 attempts with long backoff, per-account result cache.