According to TechFlow, the Solana Foundation has removed certain operators from the delegation program due to malicious pinch attacks. These operators participated in pinch attacks on users. This move is in line with the rules set by the foundation, which prohibit such malicious activities. The Solana Foundation said that they will ensure that validators that conduct malicious pinch attacks are no longer delegated to protect retail users. A pinch attack is a front-end transaction exploit where the attacker places two transactions around the victim's transaction to manipulate the price and profit from it.
