Where ShieldLabs fits
Start at registration and login, then connect the same user identifier to sensitive actions. The useful output is the relationship between a returning device, a changed connection and an account event. A VPN flag becomes more useful when it appears beside device reuse or an unexpected account transition.
Collection and outputs
ShieldLabs combines network and device intelligence. Named risk signals feed a 0–100 risk score and Trusted, Suspicious or Dangerous classifications; high-risk events add account context. These are different outputs and should remain different fields in your integration.
| Evidence area | Documented role |
|---|---|
| Network | VPN, proxy, Tor, Private Relay and IP risk |
| Device | Device identity, tampering and automation signals |
| Account context | Multi-accounting, sharing, impossible travel and takeover |
Freshness and integration handling
Checks are collected with identifications rather than treating a long-lived list of IP addresses as the complete history of a user. Keep the time of each result and bind it to the action that triggered the check.
Strengths
- Combined device and network context
- Ready-made account abuse detections
- Self-serve entry with API and webhooks
Limits and plan conditions
Collection must be installed on the relevant journey. Size the identification budget around the checks you run.
What to check in a pilot
Compare ordinary repeat logins, a customer changing networks, one device using several test accounts, and a new device accessing an established account. Confirm the events appear on the intended user records and that your team can investigate the named reasons.
Use the evaluation framework to record collection completeness, the reasons returned and the customer outcome. Compare the cost of your actual checks, not just the number of accounts in your database.
Consider an alternative when
Your only missing component is an IP dataset or lookup inside an established investigation system. Compare the focused network services on the alternatives page, while retaining authentication and account history in your application.
Compare the alternatives →Inspect a public demo or checker
A browser-oriented product preview. Compare the network observations and named signals in a controlled session; the preview does not establish your account’s quota or plan.
Open the Anonymity Checker ↗Sources and further reading
Product and technical sources reviewed October 21, 2026.
Inspect the integration before choosing.
Start Free with SHIELDUSERS ↗FAQ
Does the free allowance reset every month?
The published entry offer is 5,000 free identifications. Do not assume a monthly reset. The SHIELDUSERS welcome code adds 50,000 bonus identifications for eligible new accounts.
What does an identification mean?
An identification is a visitor check. Plan capacity around the actions you check, rather than the number of registered accounts.
Can I inspect the product before integrating?
Use the linked product pages and ShieldLabs demos to explore the output, then run a pilot on a journey you control.