What Is the Primary Difference between Traditional Market Front-Running and ‘Sandwich Attacks’ in DeFi?

Traditional front-running involves a broker or insider using non-public information about a client's large order. A DeFi sandwich attack is a type of MEV where an attacker places a buy order before a victim's trade and a sell order after it on a decentralized exchange (DEX).

The attacker profits from the price impact caused by the victim's trade, which is public information in the mempool.