Asset Discovery & Perimeter Monitoring
You cannot protect what you do not know exists. Topscan maps your internet-facing footprint and keeps the inventory current as it changes.

Challenges & Solutions
Every deploy, experiment, and cloud change can add an internet-facing asset. The ones nobody remembers are the ones attackers find first.
Challenges
- Subdomains and services exist outside any tracked inventory
- A quick deploy exposes something no one wrote down
- Cloud accounts spin up resources faster than the spreadsheet updates
- Forgotten staging and API endpoints stay online for months
- The real perimeter is always bigger than the documented one
Solutions
- Continuous asset discovery maps subdomains, IPs, APIs, and exposed services
- New assets are surfaced as your footprint changes
- Cloud-connected accounts feed discovery automatically
- Nothing is scanned until you confirm it
- One living inventory of everything internet-facing
How TopScan Asset Discovery Works

Step 1 - Start from what you own
Add a domain or IP and Topscan begins mapping outward - no manual asset list required.
- Domain and IP input
- Automatic expansion to related assets
- No spreadsheet to maintain

Step 2 - Discover the full perimeter
Topscan finds the assets tied to your footprint that never made it into any inventory.
- Subdomains and IP addresses
- APIs and exposed services
- Detected technologies on each asset

Step 3 - Confirm what to monitor
Discovery does not scan blindly. New assets arrive in a review queue; you decide what becomes a monitored target and what gets dismissed.
- New asset review queue
- Confirmation before scanning
- Dismiss assets that are not yours

Step 4 - Stay current as it changes
Discovery runs on a schedule, so the inventory keeps pace with deploys and cloud changes. New assets are reported each cycle.
- Recurring perimeter scans
- New asset notifications
- Cloud-connected assets included automatically
Features & Capabilities
Continuous Asset Discovery
Map subdomains, IPs, APIs, and exposed services as your footprint grows.
External Perimeter Coverage
See everything internet-facing, including assets no one documented.
New Asset Detection
Get notified when previously unknown assets appear on your perimeter.
Confirmation Before Scanning
Nothing enters monitoring until you approve it.
Cloud-Connected Discovery
AWS-connected accounts feed new external-facing resources into discovery automatically (Advanced).
Living Asset Inventory
One current view of your external attack surface - not a stale list.
Who Topscan is Built For
CTO
Know the real size of your external footprint without commissioning an audit.
Head of DevOps
Catch shadow infrastructure and forgotten services as environments change.
Senior DevOps Engineer
Keep an accurate asset inventory without maintaining it by hand.
Cloud Infrastructure Teams
Track internet-facing resources across accounts as they spin up and down.
Teams Preparing for Audits
Show a current, monitored inventory of internet-facing assets. Your auditor should confirm applicability.

About Topscan
Topscan is a continuous security monitoring platform built for technical teams without a dedicated security function.
Asset discovery feeds a broader workflow - attack surface monitoring, external scanning, vulnerability management, and reporting - so the assets you find are the assets you actually watch, prioritize, and fix.
FAQ
Topscan builds on the best in class scanning engines
Still have questions?
Contact us