Google DeepMind 与新加坡政府推出端侧 AI 反诈骗工具
原标题：Google DeepMind and Singapore Government announce new AI tool to protect citizens against scams
AI 摘要
Google DeepMind 与新加坡政府合作推出一款 AI 反诈骗工具，采用两阶段架构：先用轻量分类器筛查入站消息，再用微调后的 Gemma 模型结合对话上下文确认威胁或排除误报。该工具在 GovTech 管理的 GCP 主权沙盒中完成微调，训练数据不含公民个人数据，仅使用匿名化诈骗报告与情报数据。项目在新加坡国际网络周（SICW 2026）上展示，旨在帮助消息平台在保护用户与维持端到端加密之间取得平衡，并支持在设备本地运行以保护隐私。
正文节选
- Stage 1: A lightweight, efficient classifier screens inbound messages, using minimal power, focused on catching potential threats. - Stage 2: Contextual evaluation with our fine-tuned Gemma model, where we analyze a larger snapshot of the conversation to confirm a threat or discard a false alarm. Built on strict governance Presented at Singapore International Cyber Week (SICW 2026), this collaboration provides a model for messaging platforms balancing user protection with end-to-end encryption