利用图技术进行实时欺诈检测和预防

Written by Deepak Patankar and Mathijs de Jong

Introduction

介绍

At Booking.com we are dedicated to maintaining a secure and trustworthy platform for both our customers and partners. Our work involves addressing a multitude of threats, ranging from payment fraud to the proliferation of fake hotels and reviews, as well as the abuse of marketing campaigns. It’s only by effectively managing these challenges that we make it easier for everyone to experience the world.

在Booking.com，我们致力于为我们的客户和合作伙伴提供一个安全可靠的平台。我们的工作涉及到解决各种威胁，从支付欺诈到虚假酒店和评论的泛滥，以及滥用营销活动。只有通过有效地管理这些挑战，我们才能让每个人更轻松地体验世界。

Detecting and combating fraud presents a formidable challenge. Fraudsters continually evolve their tactics, demanding adaptable and agile fraud detection and prevention systems that immediately leverage newly available information. At Booking.com, we employ innovative and adaptable approaches such as machine learning models, manual investigations by fraud domain experts, and heuristic rules.

检测和打击欺诈是一个巨大的挑战。欺诈者不断改进他们的策略，要求灵活适应的欺诈检测和预防系统，立即利用新的可用信息。在Booking.com，我们采用创新和适应性的方法，如机器学习模型、欺诈领域专家的手动调查和启发式规则。

Problem statement

问题陈述

A key insight guiding our efforts is the interconnected nature of fraud attacks. Often, there are links between various actors, identifiers, and requests. For instance, knowing that an email address was previously associated with fraudulent activity provides valuable context for our systems. A natural way to represent such link data is through the mathematical concept of a graph. Recognizing the power of this interconnected data, we have therefore invested in a graph technology service. This service enables us to provide real-time link information crucial for effective fraud detection and prevention.

指导我们努力的一个关键洞察是欺诈攻击的相互关联性。通常，各种参与者、标识符和请求之间存在链接。例如，知道一个电子邮件地址以前与欺诈活动有关联，为我们的系统提供了有价值的上下文。表示这种链接数据的一种自然方式是通过数学概念中的图形。鉴于这种相互关联数据的强大作用，我们因此投资了一个图形技术服务。该服务使我们能够提供关键的实时链接信息，对于有效的欺诈检测和预防至关重要。

How do we represent requests in a graph?

我们如何用图形表示请求？

We utilize historical data, such as reservation requests, to...