Every Bing search feeds into Microsoft's advertising network of 801 partners. Edge's address bar sends what you type to Microsoft before you even press Enter — a feature called "search suggestions" that's on by default. Researcher Zach Edwards found Edge sending full URLs of pages you visit to Bing servers. Your browser is reporting your activity in real time. Bing is embedded in five places across Windows: the Start menu, the taskbar search, Cortana, Edge's address bar, and the Windows search indexer. Microsoft has made it deliberately difficult to switch — in 2023, they removed the ability to change the default search in the Edge address bar for European users until EU regulators intervened. Bing isn't a choice. It's a default that resists being changed.
What they claim: Bing provides helpful search with privacy controls.
What we found: Queries linked to Microsoft account, IP, device IDs. First PRISM participant (2007). Same ecosystem: Outlook (801 ad partners), DiagTrack, Copilot AI. Edge sends keystrokes by default.
What they claim: Copilot AI provides helpful answers from Bing.
What we found: Copilot processes queries through AI infrastructure. Search data used for AI training. No clear separation between search and AI training pipelines.
What they claim: Users can choose their search engine on Windows.
What we found: Bing default in Edge, Windows Search, Start Menu, Cortana, Copilot. Requires multiple steps and third-party tools to change. Microsoft actively resists easy switching.