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Symbiosis bridge hacked, $336K synthetic Bitcoin minted; withdrawals partly open, deposits halted.

Market News
13 Sep 2026, 06:13 WIB
CryptoTicker
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Bearish
Symbiosis bridge hacked, $336K synthetic Bitcoin minted; withdrawals partly open, deposits halted.

On September 11, 2026, the Symbiosis cross-chain protocol was attacked, allowing an attacker to mint about 46 to 369 billion synthetic Bitcoin tokens (syBTC) without backing, causing a real loss of roughly $336,000. The vulnerability was due to poor message verification in the BridgeV2 contract, enabling fake token creation. Symbiosis halted deposits of Bitcoin into the bridge but kept withdrawals operational, allowing users to still access their balances in one direction. Users are advised to check their synthetic token holdings, test withdrawals with small amounts, revoke unnecessary token approvals, and consider holding Bitcoin in hardware wallets or regulated platforms to avoid similar risks. The incident highlights the risks of cross-chain bridges compared to holding Bitcoin directly on its native blockchain.

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