Decentralized finance (DeFi) platforms have been the target of criminal attacks this year. Investors in the blockchain-based form of finance have lost billions of dollars to criminals that target the platforms. The total amount of money deposited at DeFi services has spiked from just $500 million in 2019 to $247 billion this year. Related Reading | Dog-Themed DeFi Project Mysteriously Loses Fundraised $60 Million According to a report from London-based firm Elliptic, the overall losses caused by DeFi exploits have totaled $12 billion in the past year. Out of that amount, fraud and…