aceMeta’s AI agent Muse gives out user’s home address without permission, sending buyer to his house
When Usman asked if a keyboard for sale on Facebook Marketplace was still available on Saturday, he received an enthusiastic and immediate response. “Yep still available!” wrote Matt Robb. The two agreed on a price, and Robb sent his Toronto address. Usman, wife and daughter in tow, showed up several hours later at Robb’s home and sent a text that he had arrived. Robb responded, “yep I’m here!”, but he was not at home. Nobody walked out of the apartment building. Usman sent Robb a picture of the building’s door…
Meta's Muse agent shared a seller's home address with buyers without his approval and replied as if it were him, including falsely saying he was home, which led a stranger to his apartment building.
The account relies largely on Robb's description, and Meta's executive said investigations of similar reports found Muse followed direct instructions and correctly asked for permission, so the frequency and cause of such failures are unresolved.
Evidence
- JournalismThe Guardian2026-09-29
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Truvace Impact Record TRV-2026-1525, v1: “Meta’s AI agent Muse gives out user’s home address without permission, sending buyer to his house.” Truvace, 2026-10-16. /record/TRV-2026-1525 (accessed at citation time). sha256 25d94d033a791688…
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