PayPal 已针对 PayPal 和 Venmo 朋友和家人付款推出了由人工智能驱动的动态诈骗检测功能，以增强对全球客户的保护。
这些警报旨在主动提醒客户潜在的诈骗行为，并实时防止损失，它会在最关键的时刻（即任何资金汇出之前）介入。由于诈骗者试图胁迫人们汇出可能无法获得退款的款项（包括源自社交媒体的诈骗），我们相信，将更多信息直接交到客户手中，将使他们能够帮助阻止诈骗的发生。
作为值得信赖的反欺诈领导者，PayPal 为我们致力于打击骗子不断变化的伎俩而感到自豪。我们绝不容忍任何诈骗行为，并努力保护我们的客户，包括关闭欺诈账户和阻止可疑活动。我们采取多管齐下的策略应对欺诈，包括构建创新技术、利用我们专家团队领导的调查研究以及改进风险控制措施，以防止不良行为者访问我们的平台。鉴于欺诈者经常改变手段以逃避检测，因此，紧跟最新趋势并持续改进我们的工具是我们工作的关键所在。
在构建 PayPal 动态警报系统时，我们既注重有效的欺诈缓解策略，也注重提升用户体验。当系统检测到潜在诈骗行为时，系统会弹出警报，并在付款时分享与欺诈可能性相关的关键信息。为了帮助用户保持领先地位，警报会不断学习并适应不断变化的诈骗手段。PayPal 的系统利用持续学习的人工智能模型，快速分析数十亿个数据点，并在模式发生变化时进行更新。这意味着即使我们以前从未见过这种特定的诈骗行为，我们的系统也能更快地检测到潜在的新型诈骗行为。
与传统的千篇一律的静态警告不同，PayPal 的警报是动态的，并根据每笔交易的欺诈可能性进行定制显示。系统会根据客户尝试支付的风险等级，发送相应的消息。随着欺诈行为的发生，系统会逐步发出更严格的警报，并在高风险情况下加大支付的难度。我们会继续自动拒绝那些被检测为高风险的付款。
这些警报在 PayPal 运营的所有全球市场以及美国各地的 Venmo 上均有效。
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