"Who is Trying to Access My Account?" Exploring User Perceptions and Reactions to Risk-based Authentication Notifications.
该研究围绕风险认证（Risk-based Authentication, RBA）通知的用户感知与反应展开。随着在线账户攻击日益频繁，许多服务引入RBA机制，通过判断登录上下文的风险等级触发额外验证或告警。然而，用户对这些通知的认知度偏低、