ZachXBT Names Tiffany Milanovich in Alleged Wallet and Coinbase Theft Network

Prominent blockchain investigator ZachXBT identified Tiffany Milanovich as a US-based threat actor tied to at least $5 million in thefts through hardware wallet and centralized exchange support impersonation scams.

He said Milanovich worked as a “caller” and posed as exchange or wallet support, convincing victims to give up access to their funds. ZachXBT said she has recorded herself taunting victims on calls after draining their accounts.

He also said she openly shows luxury purchases, stolen funds, and casino gambling on social media. From Support Calls to Crypto Flexes In June 2026, one victim lost $1.2 million in BTC and ETH after Milanovich and her group drained a Trezor wallet.

According to the on-chain sleuth, the theft followed a spoofed BitcoinIRA email sent under the alias “Patricia Massie.” The accused later began showing off the theft in Telegram groups.