DeFi Hit Yet Again: Grim Finance Loses $30 Million in Latest Hack

According to Grim Finance, the hacker exploited the protocol’s vault contract through five reentrancy loops.

As cryptocurrencies have experienced a meteoric rise in adoption over the past few years, so too has the number of scams increased alongside it. The decentralized finance (DeFi) sector has been one of the most exploited in 2021. 

Grim Finance, a protocol on the Fantom blockchain, which allows users to stake their liquidity pool tokens (in Grim Vaults) and automatically harvest yields and re-staking rewards, is the latest DeFi protocol on a long list to be exploited.



Grim Finance Suffers $30 Million Hack

On December 18th, Grim Finance announced that it had suffered an advanced hack, and “over $30 million” worth of cryptocurrencies was stolen from its Grim Vaults. 

According to Grim Finance, the hacker exploited the protocol’s vault contract through five re-entrancy loops. Using five loops allowed the hacker to fake five additional deposits into a vault while the platform was still processing the first deposit.

Grim Finance has locked all of the vaults and deposited funds in response, as the entire network was considered to be at risk. 


The hacker(s) continued transacting on the network until December 19th, moving as much as 1,000,000 FTM on several occasions.

 The lack of a re-entrancy guard on the network led to $30 million being siphoned from Grim Finance. This latest Hack means that hackers have now stolen $600 million from DeFi protocols in December 2021 alone.

On the Flipside

  • Despite the continuous exploits, DeFi adoption is at an all-time high, with more than $250 billion locked in several DeFi protocols.

Why You Should Care

For mainstream adoption to become a reality, DeFi protocols must solve their security problems. DeFi hacks now account for almost 80% of the entire major hack volumes of the crypto industry.

This article is for information purposes only and should not be considered trading or investment advice. Nothing herein shall be construed as financial, legal, or tax advice. Trading forex, cryptocurrencies, and CFDs pose a considerable risk of loss.

Milko Trajcevski

Milko Trajcevski is a DailyCoin news reporter, mainly focused on Ethereum (ETH), Cardano (ADA), and their founders (Vitalik Buterin and Charles Hoskinson). Milko is an avid follower of crypto and blockchain technology and has written thousands of articles on the subjects. He finds joy in transforming complex issues into written content that anyone can understand. Milko has used and analyzed numerous exchanges, such as Coinbase, FTX, and Binance. He also closely follows all of the latest news around the largest decentralized exchanges (DEXs). Location: Skopje, Macedonia