Hyperbridge exploit mints 1B bridged DOT; ETH gains capped
The Hyperbridge exploit targeted Polkadot’s cross-chain bridge, abusing an Ethereum gateway contract and ISMP flow to bypass state-proof verification and take unauthorized admin control of the bridged DOT (ERC-20) token contract on ETH.
Once in control, the attacker minted ~1B bridged DOT and sold part of the supply. The realized payout was about $237K worth of ETH, with further gains limited by thin liquidity in the bridged DOT pool.
Polkadot confirmed the impact was confined to the Ethereum ERC-20 representation of DOT. Native DOT and other parachain bridges were reported unaffected. Hyperbridge paused all transactions while it investigates and prepares an upgrade.
Market reaction was muted but bearish for DOT: DOT fell about 3.56% to ~$1.18 (near the ~$1.13 Feb 13, 2026 low). Spot saw a small net outflow (~$43K), while derivatives showed rising perpetual activity, suggesting traders may add speculative long exposure despite the security shock.
For traders, the Hyperbridge exploit is a reminder to price in bridge admin-control and liquidity-provider risk. Even when on-chain losses are capped by liquidity, bridge incidents can still trigger short-term sell pressure and volatility around DOT/ETH bridging flows.
Bearish
DOT saw a direct price dip on the back of the Hyperbridge exploit, driven by sell-pressure narratives around bridged-token admin-control risk. While the quantified on-chain impact was capped by thin liquidity (so the realized ETH payout was limited), the event still creates uncertainty about bridge-side verification and gateway security, which can keep traders risk-off near DOT/ETH bridging flows.
Short term: continued volatility is likely as Hyperbridge remains paused and traders reassess counterparty/LP exposure to bridged DOT. The small spot outflow supports the bearish reaction, even though rising perpetual activity hints at speculative positioning.
Long term: if Hyperbridge delivers a strong upgrade and no further bridged assets are found vulnerable, the market may normalize. But until the root cause is fully confirmed and bridge operations resume smoothly, bridge incidents tend to pressure sentiment and liquidity around bridged representations of DOT.