According to a report:
The amount of money lost in hacks of decentralized financed (DeFi) projects more than doubled to $1.3 billion in 2021, with centralization the most common vulnerability, Certik said in its inaugural "State of DeFi Security" research report.
- via Coindesk
It is also said that the vulnerability is because of the Centralization. The second-most common vulnerability was missing event emissions. I just hope that they get to fix these things since they now know the most common reasons of the hacks that are happening.
