🚪 An exchange can change its keys, but it can’t replace the old deposit address in your address book
What’s happened over the past couple of days with Indian exchange CoinDCX is worth a look from anyone who deposits funds regularly.
On October 21, on-chain monitoring detected about 15.99 million USDT and 5,783 TRX leaving a TRON deposit address associated with CoinDCX. The funds were then split up and sent to deposit addresses at several major exchanges.
The story took a quick turn:
🔹 A co-founder initially said these were old wallets abandoned after a hack in July 2025, that there had been no new theft, and asked people to “stop spreading rumors.”
🔹 ZachXBT then pointed out that one of the flagged old deposit addresses was still sweeping users’ deposits into the exchange’s current hot wallet as recently as April and May 2026.
🔹 CoinDCX changed its story and acknowledged that the process for sweeping funds from old deposit addresses had failed for a while, causing operational losses. The platform said it would cover the losses itself and credit users, and that funds in cold wallets were safe.
🔹 ZachXBT directly urged users to withdraw their funds. An on-chain observer estimated that only about 3.5 hours passed between “this has nothing to do with us” and “operational losses.”
To me, the most valuable takeaway isn’t about blaming anyone. It’s what one developer said: after a hack, an exchange can rotate its private keys, but it can’t rotate its deposit addresses. Those addresses are already saved in users’ address books, scripts, and all sorts of integrations, so people keep sending funds to them.
So for everyday users, these three habits are more useful than picking sides:
1. Copy the address again from the exchange’s website every time you deposit. Don’t reuse one you saved months ago.
2. For a large deposit, send a small amount first and make sure it arrives before sending the rest.
3. Compare the exchange’s initial statement after an incident with what it says later. The faster its story changes, the more cautious you should be.
The platform ultimately covered the losses, which is good. But trust is often lost in those few hours between “deny it first” and “admit it later.”
When you deposit, do you copy the address again each time, or do you usually use the one in your address book?
#CoinDCX #交易所安全 #链上安全 #USDT