## WhatsApp Introduces Incognito Chat for Private AI Interactions **WhatsApp** has announced the launch of 'Incognito Chat,' a new feature designed to enable private conversations with **Meta AI** without **Meta** having access to the content. This initiative leverages WhatsApp's **Private Processing** scheme, introduced a year ago, which already powers existing AI features like message summarization and composition tools. The core concept behind Incognito Chat is to provide AI chat integration that aligns with WhatsApp's commitment to end-to-end encryption. Unlike typical "incognito modes" that merely separate users from their data, Incognito Chat aims to completely shield user interactions from the provider. According to **Meta**, WhatsApp will only be able to detect that an account utilized the feature, without accessing the content of the chats. **Meta** is inviting third-party audits and vulnerability assessments of Private Processing, ensuring external verification of the code's robustness. However, as with any cloud-based system, using **Meta AI** on WhatsApp ultimately involves a degree of trust in **Meta** itself. ## Technical Design and Ephemeral Conversations **Will Cathcart**, head of WhatsApp, explained the challenges of balancing privacy and AI functionality. "With AI, from a privacy standpoint, you’d want to run everything on your own phone, but the benefit of these models is using larger and larger compute to make them work. So the challenge is how do you build something in a data center that’s not going to fit in your pocket but has the same types of security properties. Incognito Chat is kind of like we’re running a giant phone for AI and we don’t have the passcode." Incognito chats are designed to be ephemeral by default, disappearing once the conversation concludes. Future iterations may include options for users to retain conversation history within Private Processing. Currently, Incognito Chat is text-based, with support for image processing and voice recognition planned for future releases. Optimization of routing and reduction of latency are crucial for the usability of Incognito Chat, given the demands of running AI within the secure cloud environment of Private Processing. ## Meta's Perspective and Additional Features **Mark Zuckerberg**, **Meta's** CEO, highlighted the security measures in place: "Incognito Chat handles all AI inference in a Trusted Execution Environment that ensures your messages are not accessible to us. The conversations on your phone also disappear when you exit the session. This is different from other disappearing AI products where your conversations logs often remain on other companies' servers for many months.” **Meta** is also integrating Incognito Chat into the **Meta AI** app. Another feature announced alongside Incognito Chat is “Side Chat with Meta AI,” which enables users to engage with Meta AI about ongoing text chats. This allows users to request restaurant suggestions or movie information without directly sharing these details with the company. ## Privacy Considerations and Expert Opinions Incognito Chat includes a default-enabled (but optional) feature that allows its AI model to search the web anonymously for up-to-date information. With over 3 billion users globally, Incognito Chat could introduce many individuals to AI chatbots with a focus on privacy. **Matt Green**, a Johns Hopkins cryptographer who provided input on Private Processing, stated, "I have confidence that if you want to talk to an AI without anyone else seeing your conversation, including Meta, this will do the job.” However, Green and others have cautioned that any secure cloud-based solution involves trade-offs, making the system a valuable target for attackers. The stakes are high in a platform where users expect a high degree of privacy and may share sensitive information. Despite **Meta's** apparent focus on private AI, the company has recently eliminated opt-in end-to-end encryption from Instagram Direct Messages after years of promises to roll it out by default.