Detection of risky users under any masking, so you stop multi-accounting, account sharing and takeovers before they start costing you money.
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 risk signals power detection that keeps traffic clean and accounts honest, ready out of the box.
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 300+ 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 300+ browser, network, and device signals and surfaces the risk 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. Choose the action for each case and act on the result in your backend.
High-Risk Events link users, devices and IP addresses and flag abuse with a confidence level, with detection rules you can tune for multi-accounting and account sharing.
Active from day one
Multi-accounting, account sharing, impossible travel and account takeover are detected out of the box, with no fraud model to build.
Graded by confidence
Every event surfaces with a Medium or High confidence level, with the accounts and devices involved.
Across the full history
Detection runs across users, devices and IP addresses over the period you choose, 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 risk 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, risk signals, High-Risk Events, and detection flags on every response.
Ready out of the box
Detection works with no rule setup. Act on the result in your backend.
<script type="module">
const mod = await import('https://cdn.shieldlabs.ai/snippet.js?publicKey=YOUR_PUBLIC_KEY');
mod.checkAnonymous();
</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 99.9% identification accuracy and a 5-minute install.
One JS snippet. API and webhooks on every tier. You set the rules.
