We identify visitors behind VPN, proxy, and anti-detect masking and score the risk, so you can prevent losses from multi-accounting, bonus abuse, and fake signups.
5,000 free identifications · 5-min setup · No credit card
ShieldLabs turns anonymous traffic into a risk score for every visitor, so your ad budget, margins, and metrics are based on real users, not the noise.
Multi-accounting, repeat bonus claims, and paid-period abuse surface early, before they eat into your margins.
Know which signups are fake before the acquisition spend is wasted, so budget goes to real users.
Separate real signups from fake ones so CAC, LTV, and conversion reflect reality.
The same identity and anonymity signals power the checks your team runs to keep traffic clean and accounts honest.
Traffic quality check
Score every visit and roll it into one traffic-quality number, so you see how clean your traffic really is and where the risk concentrates.
More about Traffic quality checkTraffic quality
51,762 identifications checked
ShieldLabs builds a persistent identifier from device, network, and browser signals on the first visit, so the same visitor stays recognized long after the cookie is gone.
Accurate Identification
The same visitor stays recognized across cleared cookies, rotated IPs, and incognito sessions.
Built from 100+ signals
Device, OS, browser, IP, and network signals collected on the first page load.
Linked into one identity
Visitors, devices, and accounts connect into a single graph you can act on.
From a clean visit to a spoofed browser, ShieldLabs reads 100+ browser, network, and device data points and surfaces the anonymity signals behind each visitor, rolled into one explainable risk score.
ShieldLabs returns a risk score from 0 to 100 with the details that produced it, so it is never a black box. Your code decides what to do with each score, which means you set the rules.
Patterns correlate accounts, devices, and signals across your full traffic history, then surface with a severity rating. No custom rules to write.
Active from day one
Pre-built patterns for multi-accounting, account sharing, account takeover, account farms, and ban evasion, with no fraud model to build.
Graded by severity
Every match surfaces as Suspicious or Dangerous, with the accounts involved.
Across the full history
Correlations run over your whole traffic history, not just a single visit.
Measure traffic quality and see how much of your traffic is anonymous, broken down by channel, referrer, and UTM, with a Traffic Risk score on every source.
Assess traffic quality at a glance
A single Traffic Risk score showing what share of your traffic is anonymous.
Anonymity by channel and UTM
See which partner, creative, or campaign delivers invalid traffic instead of real visitors.
Your real audience, finally visible
Recognize returning visitors even after cleared cookies and fragmented sessions.
One JS snippet installs it. Every request returns a persistent visitor ID, the anonymity signals behind it, and an explainable risk score, all over API and webhooks.
One JS snippet
Drop it on your site and start collecting signals in about five minutes.
API and webhooks
Delivered on every plan, including the free tier.
Everything in the payload
A visitor ID, risk score, anonymity signals, and detection flags on every response.
You set the rules
ShieldLabs surfaces the signals; your own code owns the decision.
<script src="https://cdn.shieldlabs.ai/shield.js" async></script>
Works on any stack
One snippet drops into a framework, a CMS, or a no-code builder.
JavaScript
WordPress
Tilda
Shopify
Next.js
React
Angular
Vue.js
Preact
SvelteA free tier to get going, then transparent self-serve pricing that scales with your traffic. No sales calls, no annual or enterprise contracts to sign.
Start with 5,000 free identifications
See the anonymous and abusive traffic you're missing.
Monitor traffic quality as you grow.
Billed yearly
Save $238 a year
25,000 identifications / month
$0.00317 per identification
Then the same rate per additional identification
Catch abuse before it costs you.
Billed yearly
Save $958 a year
150,000 identifications / month
$0.00213 per identification
Then the same rate per additional identification
Built for high-traffic platforms.
Billed yearly
Save $2398 a year
500,000 identifications / month
$0.00159 per identification
Then the same rate per additional identification
Assess traffic quality and prevent abuse and fraud, with up to 99% accuracy and a 5-minute install.
One JS snippet. API and webhooks on every tier. You set the rules.
