PISIGuard是一款浏览器扩展工具，用于在用户与AI聊天时保护个人和敏感信息。[1]该工具在浏览器本地运行，自动检测并用占位符替换用户输入中的姓名、邮箱、电话、密码等敏感数据，同时在AI回复中恢复原始值，确保敏感信息不会被发送到AI服务器。[1]
该扩展支持检测的敏感信息类型包括姓名、邮箱地址、电话号码、信用卡号、密码和API密钥等。[1]PISIGuard兼容ChatGPT、Claude和DeepSeek等AI平台，[1]并支持Chrome、Edge、Opera和Firefox等浏览器。[1]由于所有处理均在本地设备上完成，不向外部服务发送数据，该工具为用户提供了隐私保护。[1]该项目由Codoma.tech开发，属开源项目。[1]
PISIGuard is a browser extension designed to protect personal and sensitive information when users interact with AI chatbots[1]. The tool operates locally on users' devices, automatically detecting and replacing sensitive data such as names, email addresses, phone numbers, passwords, credit card numbers, and API keys with placeholder values before sending user input to AI services[1]. When the AI responds, the extension restores the original values, ensuring that sensitive information never reaches AI servers[1].
The extension is compatible with major AI platforms including ChatGPT, Claude, and DeepSeek, and supports multiple browsers such as Chrome, Edge, Opera, and Firefox[1]. All data processing occurs entirely on the user's local device, with no information transmitted to external services[1]. PISIGuard is an open-source project developed by Codoma.tech[1].