Structure of a Rule in Buckaroo Shield

A rule consists of an if/then statement between a condition and an action.

If [Condition] Then [Action]

Condition

A condition consists of one or more expressions combined with AND or OR operators.

Example Condition:

[Expression A] AND [Expression B] OR [Expression C]

There are three possible actions to choose from:

Action	Description
Warn	A warning is given for the transaction
Refuse	The transaction is refused, or will be automatically refunded in the case of an After-The-Fact refusal
Exempt	The transaction is exempted from Shield rules and lists

An expression is a combination of datapoints/functions and relational operators.

Expression Examples:

[Datapoint A] [relational operator] [Datapoint B]

[Datapoint A] [relational operator] [value]

[Function] [relational operator] [value]

Function	Description
Card numbers attempted from client IP	Count of unique debit or credit card numbers used per Client IP per time interval
Gift card attempts from client IP	Count of unique gift card numbers used per Client IP per time interval
Payment attempts	Count of payment attempts per Client IP per time interval
Card numbers attempted from client IP (global)	Count of unique debit or credit card numbers used per Client IP per time interval, across all Buckaroo merchants
Gift card attempts from client IP (global)	Count of unique gift card numbers used per Client IP per time interval, across all Buckaroo merchants
Card number originates from unknown country	Card number country could not be identified
Client IP originates from unknown country	Client IP country could not be identified

Operator	Example
Contains text	Card number contains text 5561
Equals	Card number type equals ChargeCard
Greater than	Amount greater than 500.00
Greater than or equal	Amount greater than or equal 500.00
Less than	Amount less than 1.00
Less than or equal	Amount less or equal 1.00
Not equals	Card number brand not equals Mastercard
Occurs in	Card number brand occurs in UnionPay, Rupay, Belkart