Odaily Planet Daily News: People familiar with the matter said that a total of 32 validators were removed by the Solana Foundation for conducting "sandwich" attacks against users, including some Russian operators. These validators hold a total of 1.5 million SOL, accounting for 0.5% of the staking ratio. A representative of the Solana Foundation said on Sunday: "We found that operators of memory pools that allow sandwich attacks are taking enforcement action." (CoinDesk) The Solana Foundation announced that because a group of validator operators participated in the "sandwich" attack on Solana users, the foundation has removed them from the delegation program. The removal of these validators is in line with the rules set by the foundation, and the relevant rules prohibit such malicious activities.