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BTC $96,420 +2.34% ETH $3,280 +1.82% SOL $185.40 -0.92% BNB $642.50 +0.45% XRP $2.18 +3.12% DOGE $0.082 -1.50% ADA $1.05 +0.80% AVAX $42.10 +1.15%
09/14/2026

Symbiosis Recovers 15 BTC After Bridge Exploit, Offers 20% Bounty

What happened: Symbiosis, a cross-chain protocol, announced it had recovered approximately 15 BTC (~$1.

Symbiosis Recovers 15 BTC After Bridge Exploit, Offers 20% Bounty

What happened: Symbiosis, a cross-chain protocol, announced it had recovered approximately 15 BTC (~$1.15 million) following a major exploit of its Bitcoin bridge. The attacker minted roughly 46.1 billion synthetic BTC (syBTC) via a vulnerability in the BridgeV2 contract on BNB Chain—an amount over 2,000 times the real Bitcoin supply—but was able to realize only about $336,000 by swapping 4.39 WBTC on Uniswap v4, hampered by liquidity constraints. Symbiosis offered a 20% white-hat bounty to the attacker and third-party informants, and has begun developing a compensation framework for affected liquidity providers. The Block notes that the 15 BTC recovery remains unverified on-chain, with no wallet addresses or transaction hashes disclosed.

Why it matters: The exploit underscores persistent risks in cross-chain bridge infrastructure, with attackers exploiting synthetic asset minting at scale. While the financial damage was limited by market illiquidity, the incident highlights the importance of transparency in post-exploit recovery claims. The swift rerouting of BTC swaps and ongoing compensation plans may help restore user confidence, but the lack of on-chain verification for the recovered funds leaves questions about the full remediation process.

Source: The Block