Blog: Fraud
Articles tagged fraud, newest first.
Tor network detection: spot visits from Tor exit nodes
What Tor is, why some sign-ups and checkouts come through it, and how to read the Tor signal on each event so your backend can ask for a human check or review.
VPN and proxy detection: read the signals on each event
Not every VPN user is a fraudster. Read the VPN, proxy and datacenter signals on each event and decide when to ask for a human check instead of a block.
Impossible travel detection: use velocity counts to catch it
Impossible travel means one account or device shows up in places no person could reach. See the velocity counts we give you and how to write the rule yourself.
Detect account takeover at login with Node.js
Tutorial: identify the browser at login, fetch the event on your Node.js server, compare the visitor with the account’s known devices and ask for a second step.
Protect a Next.js sign-up from repeat free trials
Stop repeat sign-ups in a Next.js App Router app: mint an intent, identify the device in a client component, and decide on the server with the Node.js SDK.
Check free-trial eligibility from a Python backend
Decide on your Python backend whether a device may claim a free trial or coupon: create an intent, check eligibility, fail closed, and release a refunded claim.
Multi-accounting detection: find duplicate accounts by device
· Fraud
Multi-accounting is one person running many accounts to repeat free offers or dodge limits. How to detect duplicate accounts by device, email and network.
Referral fraud: how to detect and prevent referral abuse
· Fraud
Referral fraud is one person inviting themselves, or a ring of fake accounts, to collect referral rewards. The signs to look for and how to stop it in time.
How to prevent free trial abuse: one device, one free trial
· Fraud
Free trial abuse is one person signing up again and again for a new trial. The checks that stop it on the server, and how real users stay unaffected.
Coupon abuse: how to stop promo code and sign-up bonus abuse
· Fraud
Coupon abuse is one person redeeming a one-per-customer code or sign-up bonus many times. How to limit promo codes per device and keep honest customers happy.