Transparent public blockchains allow third parties to deduce user identities by analyzing on-chain transaction patterns

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Blockchain investigator ZachXBT reported on November 3, 2026, that an unidentified Western European institution suffered a suspected crypto theft exceeding $133 million

Blockchain investigator ZachXBT increased the estimated loss in the suspected European institution theft from $106 million reported on November 2, 2026, after identifying an additional $27 million in centralized exchange withdrawals

Blockchain investigator ZachXBT stated that the laundering patterns from the suspected $133 million European institution theft did not match the typical methods used by North Korea’s Lazarus Group

Analytics firm Bitquery reported that the attacker linked to the $133 million theft converted approximately $62.98 million in stablecoins into 27,553 Ether within roughly four hours

The Aztec protocol operates without protocol-level viewing keys or centralized backdoor access

Storing encrypted credentials on-chain with user-held decryption keys prevents third-party hosting services from controlling user data

ZK Passport generates mathematical proofs verifying identity or sanctions status without transmitting raw passport data off the user's device

Applications built on Aztec can optionally implement viewing keys directly at the application layer

Blockchain intelligence firm TRM Labs attributed the October 29 Binance breach to TraderTraitor with high confidence, citing transaction signature execution, Tornado Cash usage, and onchain commingling

Onchain investigator ZachXBT identified a connection between the October 29 Binance hack and the Bitget hack, finding stolen funds from both were commingled at the same address after passing through THORChain

Wasabi Wallet restricted its operations and withdrew its services from the United States following regulatory actions against privacy tools

Blockchain security firm Hypernative estimated that over $40 million in unauthorized transfers occurred across at least 10 blockchains linked to Mercado Bitcoin's wallets

Mercado Bitcoin published destination wallet addresses across EVM chains, Bitcoin, Solana, Stellar, and Tron on November 2, 2026, to assist on-chain fund tracking

According to security firm Hypernative, suspicious transfers linked to the hack on Mercado Bitcoin's hot wallets first appeared around 11 PM on November 1, 2026, in Brazil

Blockchain tracker Onchain Lens noted that total losses from the BloomTrading exploit could ultimately exceed the initial $954,000 estimate.

Zcash provides optional viewing keys that allow users to grant auditors or regulators access to selective transaction details.

Faustine Fleuret of Morpho stated that centralizing cryptocurrency transaction data in an EU repository creates a single point of failure and safety risks for investors.

Former Monero developer Riccardo Spagni described upcoming EU anti-money-laundering regulations as lopsided toward surveillance for barring access to anonymous wallets.

Onchain Lens identified the primary receiving address for the stolen BloomTrading funds as 7kY8qx8MqJ7Rz2vMhgHETdZLHcTp1oM78AA9dmE9p8BQ.

Blockchain analytics company Bitquery reported that the October 26, 2026 BloomTrading exploit drained $953,000 across 94 seconds.