Catch Phishing & Unauthorized Certificates Before They're Used
Monitor certificate transparency logs for new certificates matching your domains. Detect typosquatting, unauthorized issuance, and shadow IT instantly.
Phishers Don't Wait. Neither Should You.
Certificate transparency logs are public, but monitoring them manually is impossible. Attackers register look-alike domains daily.
200M+ Daily Certs
Certificate authorities issue millions of new certificates daily. Finding the malicious ones in this haystack requires automation.
Typosquatting
Attackers register yourbank-secure.com, yoυrbank.com (unicode), and your-bank-verify.com to harvest credentials.
Shadow IT
Developers spin up staging.yourcompany.com without security approval. CT logs reveal it before it becomes a breach vector.
From Certificate to Alert in Minutes
Automated monitoring with intelligent filtering
Monitor CT Logs
We continuously ingest all major certificate transparency logs from Google, Cloudflare, Let's Encrypt, and all trusted CAs.
Match Your Patterns
Configure keywords, exact domains, wildcards, and regex patterns. We find certificates matching your brand, products, or domains.
Instant Alerts
Get Slack, email, or webhook alerts within minutes of certificate issuance. Include WHOIS data, IP resolution, and risk scoring.
Advanced CT Monitoring Features
More than just keyword alerts
Homoglyph Detection
Detect unicode lookalike characters (e.g., Cyrillic 'а' vs Latin 'a') that phishers use to bypass simple keyword filters.
Historical Search
Search 5+ years of CT log history. Find when a suspicious domain first appeared and track its certificate renewal patterns.
Risk Scoring
Automatically score certificates based on Levenshtein distance, character substitutions, suspicious TLDs, and hosting reputation.
Real-Time Enrichment
Every alert includes WHOIS registration date, IP addresses, hosting provider, and screenshots of the live site (if reachable).
Wildcard Monitoring
Monitor *.yourcompany.com to catch unauthorized subdomains issued by your team without InfoSec approval.
Export & Integration
Export to CSV/JSON, or integrate with your SIEM, ticketing system, or brand protection platform via webhooks.
Who Needs CT Monitoring?
Protect your brand, customers, and infrastructure
Brand Protection Teams
Detect phishing sites targeting your customers before they steal credentials. Get takedown notices ready the moment a malicious cert is issued.
Security Operations
Monitor your internal domains for unauthorized certificates. Catch shadow IT, leaked credentials, and policy violations in real-time.
Fraud Prevention
Financial institutions, crypto exchanges, and payment processors use CT monitoring to detect fraudulent sites impersonating their services.
Compliance & Audit
Track all certificates issued for your domains to meet SOC 2, PCI-DSS, and ISO 27001 requirements for certificate lifecycle management.
Real Certificate Alert
What a typical high-risk alert looks like
CT Monitoring Pricing
Pay only for what you monitor
- 50 keyword monitors
- Slack/webhook alerts
- 90-day history
- Homoglyph detection
- Auto-screenshots
- Advanced risk scoring
- Unlimited monitors
- Custom integrations
- Unlimited history
- Dedicated support
- SLA guarantee
Protect Your Brand Today
Join 500+ security teams monitoring certificate transparency logs. Start free, upgrade when you need advanced features.
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