Keep fraudsters out, let real users in
Advanced signal analysis
Our Watch API analyzes a wide range of digital signals to detect unusual patterns and suspicious behavior in real-time. Heres’ how Prelude keeps your platform safe.
Number portability history
A key indicator of genuine identity, helping you verify users more accurately
Residential proxy detection
Spot users hiding behind residential proxies, a common tactic used to mask fraud
Mobile SDKs
Send over 50 user signals (device model, app version, battery level, and more) to Prelude through our Mobile SDKs for the most accurate filtering possible.
Safeguard your business and users from fake and synthetic accounts
Secure your users
With over 40% of new online accounts being fake, fraudsters are putting your platform and your users at risk. Stop them in their tracks and safeguard your business with real-time fraud detection.
Save on KYC costs
Why spend on KYC checks for fake users? Detect and block suspicious accounts during sign-up, reducing verification costs and preventing fraud from slipping through.
Passive verification
Boost your onboarding conversion rates with silent, behind-the-scenes checks that verify users seamlessly. No interruptions, no friction, just a smooth, secure experience your users will love.
Instant detection of suspicious sign-ups
Stop fraud at the source with real-time risk scores and actionable insights from open-source intelligence. We help you block bad actors before they get in by detecting.
Data Breach History
Cross-check phone numbers and emails against known data breaches to flag compromised accounts
Disposable Phone Numbers
Identify and block temporary numbers from black-market services commonly used by fraudsters
IP and Device Signals
Catch location and device discrepancies that indicate suspicious activity
50 Signals
Device ID, Device Type
IP : 254.180.141.56
SDK
Why the most ambitious companies trust Prelude to protect their growth
Integrate our Watch API in minutes
Protect your users instantly with our Watch API—whether for bulk verification or real-time checks. With SDKs in popular programming languages and detailed expert documentation, protecting your user base has never been easier. Sign up to start testing today—no credit card required!