Ambriel

Fraud Prevention

Whitelists and Blacklists You Control

Your own allow and block lists, checked on every event and updated automatically from outcomes — trusted customers skip friction, known bad actors never get in.

Lists that learn

User-generated lists checked in real time, kept fresh without manual upkeep.

VIP merchant mailAllow

Known mule phoneBlock

Grey-area deviceHold

Check against

Every transaction, login and signup screened against your lists in milliseconds.

  • Emails, phones, IPs, devices, BINs
  • Per-list actions: allow, hold, block
  • Millisecond lookup at decision time
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Your institutional memory, enforced automatically

Every lesson your team ever learned about an email, device or account — applied to the next event without anyone lifting a finger.

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Whitelist & Blacklist questions, answered

The questions teams ask most about whitelist & blacklist.

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Role-based access: analysts propose, defined roles approve. Every change is logged with author and timestamp.

No. Lookups run in milliseconds alongside scoring, before the decision returns.

Yes — per-entry TTL with review queues, so lists stay relevant instead of growing forever.

Stop fraud before it costs you

One integration for fraud, AML, KYC, KYB and onboarding.