Skip to content

Latest commit

 

History

History
118 lines (102 loc) · 3.79 KB

README.md

File metadata and controls

118 lines (102 loc) · 3.79 KB
Raw

Fraudo DSL

Language for describing antifraud patterns

Provides the ability to describe the required set of rules for characteristics and triggers for attempts at fraudulent actions

Syntax

alt text

OPERATIONS:
*   count("group_field", time_in_minutes|[from_offset, to_offset], ["group_by_additional_fields"])
*   countSuccess("group_field", time_in_minutes|[from_offset, to_offset], ["group_by_additional_fields"])
*   countError("group_field", time_in_minutes|[from_offset, to_offset], "error_code", ["group_by_additional_fields"])
*   sum("group_field", time_in_minutes|[from_offset, to_offset], ["group_by_additional_fields"])
*   sumSuccess("group_field", time_in_minutes|[from_offset, to_offset], ["group_by_additional_fields"])
*   sumError(("group_field", time_in_minutes|[from_offset, to_offset], "error_code", ["group_by_additional_fields"])
*   unique(("group_field", "by_field",time_in_minutes|[from_offset, to_offset], ["group_by_additional_fields"])
*   in(("field", "first", "second", ...)
*   inWhiteList("field")
*   inBlackList("field")
*   inList("test", "email")
*   inGreyList("email")
*   like("field", "regexp_in_java_style"[1])
*   amount()
*   country() - this function can return result "unknown", you must remember it!

group_field:

  • email,
  • ip,
  • fingerprint,
  • bin,
  • shop_ip,
  • party_id,
  • card_token
  1. regexp_in_java_style

RESULTS:

*   accept 
*   3ds
*   decline
*   notify
*   normal

EXAMPLES:

Simple:
rule: 3 > 2 AND 1 = 1
-> accept;
Black list check:
rule: inBlackList("email")
-> notify;
Counts check:
rule: (count("ip", 1444) >= 10 OR countSuccess("email", 1444) > 5)
        AND countError("fingerprint", 1444, "error_code") > 5
-> notify;
Unique count emails for ip:
rule: unique("email", "ip") < 4
-> decline;
Check country by ip:
rule: country() = "RU"
-> notify;
Check current amount:
rule: amount() < 100
-> accept;
Catch:
rule: unique("email", "ip") < 4
-> accept
catch: decline;
Combined check:
rule:
inWhiteList("email", "fingerprint", "card", "bin", "ip") -> accept; # принимаем платеж, если хотя бы один из указанных параметров находится в вайтлисте

rule:
inBlackList("email", "fingerprint", "card", "bin", "ip") -> decline; # отклоняем платеж, если хотя бы один из указанных параметров находится в блэклисте

rule:
in(countryBy("bin"), "AS", "SD", "TR", "WE", "SD", "CD", "KL", "EW", "VF", "XZ", "CD") -> decline; # эти страны блочим всегда

rule:
amount() > 1000 AND in(countryBy("bin"), "DS", "LA", "AS") -> decline; # лимит суммы платежа 10 баксов для 

rule:
amount() > 1000 AND in(countryBy("bin"), "VC", "WE") -> decline;# лимит суммы платежа 10 баксов для некоторых стран

rule:
amount() > 10000 -> decline;# лимит суммы платежа 100 баксов для всех остальных

rule:
count("card", 1440) > 10 AND in (countryBy("bin"), "TR", "WE", "SD", "CD", "KL", "EW") -> decline;# этим странам 10 попыток с одной карты в сутки

rule:
count("card", 1440) > 5 -> decline;# остальным странам 5 попыток с одной карты в сутки

rule:
unique("card", "email", 1440) > 3 -> decline; # лимит 3 уникальных карты на емэйл за сутки

rule:
unique("card", "fingerprint", 1440) > 3 -> decline; # лимит 3 уникальных карты на девайс за сутки