According to TechFlow, the OpenTensor Foundation of the Bittensor community said in a statement that the Bittensor community suffered an on-chain attack on July 2. The attack originated from a malicious package in PyPi Package Manager version 6.12.2, which compromised user security. The attacker stole unencrypted cold key details through malicious code disguised as a legitimate Bittensor package. The OpenTensor Foundation has removed the malicious package and is conducting a comprehensive review of the code base, and no other vulnerabilities have been found. The OpenTensor Foundation will gradually restore the normal operation of the Bittensor blockchain and recommends that users upgrade to the latest version to ensure safety.