According the latest statements from both blockchain security firm Slow Mist and Tether, the issue is actually down to an exchange integration flaw.
On Thursday, Slow Mist claimed in a WeChat post that when an exchange is conducting a transaction with USDT, the exchange needs to verify that the transactions details are “true.
” If this is not carried out, it said, a “false recharge” occurs whereby both the recipient and the sender are credited with the tether tokens being transacted.
In a statement, a spokesperson for Tether emphasized that the issue was not part of the USDT protocol.
They told CoinDesk:
“Rather, it was due to a faulty integration of Tether at the exchange level.

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