? Hackers stole $20 million from a major trader on Hyperliquid — details of one of the most high-profile attacks of the month.
Yesterday, one of October’s largest breaches occurred on the decentralized trading platform Hyperliquid: unknown hackers stole about $20 million from a major market participant by gaining access to his private key.
Comment from GreatWeb: “Hard to believe someone with $20M was using hot keys.
Cold storage isn’t optional — it’s mandatory.”
According to on-chain analysts, the attackers drained $17 million directly from the Hyperliquid platform and another $3.1 million from the Plasma Syrup Vault, a DeFi liquidity pool linked to the project. Afterward, the funds were moved to the Arbitrum network, where USDC was swiftly swapped for DAI and then distributed across multiple new wallets to complicate tracking.
Experts note that the attack showed signs of a well-prepared phishing operation: the hackers likely obtained the seed phrase or private key via a fake app or a malicious browser extension.
Hyperliquid, one of the fastest-growing decentralized exchanges, is known for its low fees and high execution speed.
Following the incident, the project’s team stated that the platform’s core infrastructure remained intact and that the attack targeted only an individual user wallet.
However, the DeFi community is alarmed — the breach served as a reminder that the main vulnerability of Web3 is not protocol code but the human factor.
Even seasoned traders with multimillion portfolios are sometimes not immune to mistakes in private key management.
On-chain investigators continue to monitor the addresses connected to the theft, though experience shows that recovering such funds is almost impossible.
?️ This incident has already been called “the most painful lesson of the month” — another reminder that in the era of DeFi, even whales must remember: not your keys, not your coins.
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