Privacy Cash Pauses Deposits After $1.2M in Binance Hack Funds Traced to Pools
Privacy Cash suspended new deposits on Nov. 4 after blockchain investigators traced about $1.2 million in theft-linked ETH and SOL from the Binance hack into its privacy pools. Withdrawals remain open while the team strengthens wallet screening, with no reopening date set.
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Deposits Suspended, Withdrawals Still Open
Privacy Cash has temporarily paused deposits, saying in a Nov. 4 post that it will strengthen wallet screening after funds linked to the Binance hack entered its privacy pools. The team said existing users can still withdraw throughout the pause, and it has not set a date for reopening deposits or described the specific screening changes it plans.
The project framed the decision around its original purpose. "When we started Privacy Cash, our goal was to make privacy tools for everyday people, not to enable crime," the team wrote, adding that it wanted to prevent bad actors from using the product.
How the Stolen Funds Were Traced
The suspension followed blockchain monitoring that first flagged stolen Solana. On Nov. 3, Onchain Lens identified 8,567 SOL in deposits from an address linked to the Binance hacker, a transfer it valued at about $798,000 and said other addresses were showing similar activity.
The sources differ on the size of the total. Elliptic's investigation put the figure at roughly 41 ETH and 9,600 SOL entering Privacy Cash on Nov. 3, worth about $1 million combined. Its Nov. 4 update added roughly 2,300 SOL, bringing the estimate of theft-linked ETH and SOL deposits to about $1.2 million. The Onchain Lens number covered one Solana address, while Elliptic's assessment covered two assets and a further day of deposits, so the figures are not directly comparable.
Screening Process and Open Questions
Privacy Cash's documentation says signed deposit transactions pass through a relayer that checks addresses against CipherOwl, and that deposits from flagged addresses are rejected. The protocol supports Solana, Ethereum, Base, BNB Chain, and Robinhood Chain. Its documentation also acknowledges that observers may infer links between deposits and withdrawals when distinctive amounts enter and leave a pool close together.
The announcement did not explain how the theft-linked deposits passed the existing screen, nor did it identify a specific failure. In replies to users, the team said Binance had paused withdrawals for several days and repeated that its own screening would be strengthened. Binance co-CEO Richard Teng said on Nov. 3 that the exchange had replenished 98% of the stolen funds, according to the source material.
Why It Matters
For Traders
Holders of privacy-sector tokens should expect continued scrutiny of pool flows, though the pause affects new deposits rather than existing withdrawals.
For Investors
The incident highlights compliance pressure on privacy protocols, and how screening is implemented may shape their regulatory standing over coming quarters.
For Builders
Relayer-level address screening failed to stop theft-linked deposits, so builders should review how screening integrates with zero-knowledge pool designs.
This article is for information only and is not financial advice. Read the full disclaimer.
