Filament DEX Suffers Major Self-Liquidation Exploit
On April 6, Filament, a decentralized exchange on the Sei blockchain, faced a significant security breach. Attackers exploited the platform’s order book system, stealing approximately $572,000.
The exploit happened between 12:00 AM and 4:00 AM UTC. The attackers used large orders and self-liquidations across multiple accounts to manipulate prices and withdraw funds. before the attack,Filament held around $680,000 in user deposits.
Upon discovering the breach, Filament immediately halted all trading and withdrawals to prevent further losses. The team is now collaborating with law enforcement and blockchain security experts to trace the stolen funds.
The attackers moved the funds via the Symbiosis Bridge and into exchanges like FixedFloat. Filament has shared wallet addresses and transactions with authorities to aid in recovery efforts.
Filament has offered the attacker a 10% bounty, about $57,000, to return the remaining funds. This offer is negotiable if the attacker cooperates fully.
Abhitej, Filament’s co-founder, posted an update on X. The team is reviewing logs and working with authorities to create a plan to return funds to liquidity providers. A full report will be provided soon.
This attack is part of a record-breaking year for crypto hacks. According to Immunefi’s Q1 2025 report,$1.64 billion was stolen in the first quarter alone. DeFi protocols lost $106.8 million in 38 incidents.
On march 26, Hyperliquid (HYPE) also suffered a $10.63 million loss due to a self-liquidation incident. Dr. Jan Philipp Fritsche of Oak Security warns that many DeFi platforms are at risk due to predictable trading mechanics failures.
