tl;dr: Google has quietly reversed its 2023 promise that personal Gmail, Docs, and Drive content connected to Gemini wouldn't be seen by human reviewers, now explicitly warning users not to connect apps containing confidential data. Testing shows Gemini probabilistically ingests Workspace content—ranging from metadata summaries to full unredacted file contents including PII—triggered autonomously by casual conversation without explicit @Drive or @Gmail tags. Google's automated scrubbers reportedly fail to deidentify narrative data like account numbers and transaction details before contractor review.