SEI Chain Synnax contract suffers flash loan attack: 1.96 million WSEI stolen, on-chain misoperation triggers risk

DAOplomacy · 2026-01-09T04:52:12+00:00

The Synnax contract on the SEI chain was subjected to a flash loan attack, with the attacker borrowing 1.96 million WSEI, which has not yet been recovered. The attack was caused by a user error, transferring funds into the contract, exposing the risk of on-chain operational mistakes in the DeFi ecosystem. Users and developers are reminded to exercise caution with every transaction.

DAOplomacy

2026-01-09 04:52:12

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【BitPush】Another DeFi attack case. The Synnax contract on SEI chain was subjected to a flash loan attack, with the attacker successfully borrowing 1.96 million WSEI (about $240,000), which has not been recovered to this day.

Interestingly, the trigger for this attack was not some advanced hacking technique, but an ordinary on-chain misoperation. Three blocks ago, the user at address 0×9748…a714 accidentally transferred funds directly to the contract address. What was just a small mistake unexpectedly gave the attacker an opportunity—this “mistransfer” became the seed capital for the flash loan attack.

From the transaction records, the entire attack process involved coordination between TX1 and TX2. This reminds us that seemingly simple on-chain operational errors in the DeFi ecosystem remain a major hidden risk in the face of complex contract interactions. Whether it’s users or protocol developers, every on-chain transaction must be approached with utmost caution.

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EntryPositionAnalyst

· 01-09 05:22

A simple misclick can trigger a 240,000 bloodbath. This contract design is just too fragile. One careless mistake on-chain and it's all gone. No wonder everyone says DeFi is just a casino. SEI, you need to review the code quickly, or who will dare to use it? That's why I only dare to play the main market; small chains are too risky.

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DaoResearcher

· 01-09 05:19

It is worth noting that this attack actually reflects the current systemic vulnerabilities in DeFi governance—users lack adequate interaction security mechanisms. From the perspective of Token economics, the incentive design is fundamentally inadequate.

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MerkleDreamer

· 01-09 05:17

Haha, someone directly sent money to the attacker? The cost of on-chain misoperation is just too high. --- It's another mistake caused by clumsiness. DeFi is the ultimate test of human nature. --- $240,000 just disappeared like that... Honestly, I'm starting to doubt whether these contracts are really secure. --- The combo of flash loans and others' mistakes is just perfect for committing crimes. --- Why do people keep transferring coins to contract addresses? That takes a lot of carelessness. --- There have been quite a few incidents on the SEI chain recently. Investors need to be cautious. --- TX1 and TX2 working together... In simple terms, it's human vulnerability being exploited to the fullest. --- I just want to know how the person who transferred by mistake is feeling right now.

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SchrodingerPrivateKey

· 01-09 05:04

Accidental transfers can become attack points—how absurd is that? Really, don't think small operations are harmless; one wrong step on the chain can lead to a chain reaction. That's DeFi for you—impossible to guard against everything. Who's to blame? Why do such ridiculous vulnerabilities always succeed? Have contract audits all gone to sleep? $240,000 just disappeared like that. I need to be more cautious.

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