Know when your perimeter changes — before attackers do
Continuous security monitoring that watches your infrastructure 24/7. Get instant alerts when ports open, services change, or TLS certificates expire.
$ skannr scan api.example.com
Scanning api.example.com from 3 vantage points...
✓ Port 443/tcp HTTPS nginx/1.25.4
✓ Port 22/tcp SSH OpenSSH 9.6
⚠ Port 8443/tcp HTTPS-alt (new — not seen before)
Diff: +1 port since last scan (2h ago)
→ Alert dispatched to #security-alerts
Everything you need to secure your perimeter
Built for teams who take security seriously
Port Scanning
Detect open ports, service changes, and banner modifications across your entire infrastructure in real-time.
Diff Alerts
See exactly what changed between scans with detailed, color-coded diffs — like git for your network.
Uptime Monitoring
Get notified via email, Slack, Telegram, or webhooks the moment something changes on your perimeter.
TLS Monitoring
Monitor certificate expiry, protocol versions, and cipher suites. Never get caught with an expired cert again.
Security Score
Track your security posture with a score from 0-1000. Earn badges, maintain streaks, and compete with your team.
API First
Zero tracking cookies. No Google Analytics. No data selling. Your security data stays yours. Period.
No cookie banners. No trackers. Just security.
We believe your security data is yours. Zero tracking cookies, no third-party analytics, no data selling. Self-hosted analytics only.
Simple, transparent pricing
Start free. Scale when you are ready.
Pro
For professionals who need more
- 50 hosts
- Hourly scans
- All alert channels
- 90-day history
- API access
- Streak freezes
- Leaderboard access