The Yearn Finance Vault Attack: $11 Million Exposed but Not All Loot Goes to the Hacker

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A Staggering Heist: What Happened?

On February 5, the notorious Yearn Finance platform was rocked by an exploit of its V1 yDAI vault, resulting in a dizzying loss of $11 million. But here’s the kicker: the hacker didn’t quite walk away with all that cash. They managed to snag only $2.8 million from the chaos, which, let’s face it, is still a hefty chunk of change—but nowhere near what was available for the taking!

Who Benefited More?

Interestingly enough, liquidity providers on Curve emerged as the surprising beneficiaries of the attack, reportedly raking in over $3 million. It seems that while one thief did their best to profit, the true windfall landed elsewhere. So, a round of applause for those unintended profits!

The Technical Breakdown

This wasn’t your average heist shot in the dark. Stani Kulechov, the founder of Aave—a platform too cool for ordinary loans—described the exploit as a complex series of maneuvers, involving over 160 transactions and more than $5,000 in gas fees. Talk about an expensive crime spree!

Yearn Finance’s Reaction

In the aftermath, Yearn’s team, led by the developer known as Banteg, made a swift decision to halt all deposits to the affected V1 vaults, including DAI, USDC, USDT, and TUSD, as investigations unfolded. Banteg tweeted the incident and pushed for patience while they scrutinized what had just gone awry.

Community Response

The community had its antennas up, naturally. The blast of bad news caused Yearn Finance’s governance token, YFI, to plummet about 15% within two hours, falling from a promising $35,000 to a meager low of $29,600—a true roller coaster of emotions. But amid this chaos, Yearn managed to keep its total value locked (TVL) relatively stable, dropping just 4% from $526.5 million to $507.2 million, all things considered!

Lessons Learned

This attack isn’t a standalone incident for Yearn Finance. Last September, a similar fate befell a project by Andre Cronje, the lead developer, who got a rude awakening when hackers drained $15 million from Emergence while he was catching some Zs. So, what’s the takeaway? Remember, in the world of DeFi, vigilance is key, and it might be a good time to read through those risk disclosures a tad more closely!

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