Hack history / 2026 / Hack or exploit
Sonic ICP
Hack or exploit on Jul 15, 2026 · Withdrawal Logic Flaw
ONE SOURCE · 1 SOURCE
Lost
$276K
dollars at the time
Returned
none listed
as the sources state it
Rank
#1,350
among thefts by dollars lost
What happened
Sonic DEX, a decentralized exchange on Internet Computer, suffered an exploit involving transaction atomicity failures during asynchronous canister execution. The attacker submitted coordinated, high-frequency requests that exploited race conditions during intermediate state transitions, allowing unauthorized withdrawals before the protocol completed reconciliation. The attack affected 26 liquidity pools and resulted in approximately $276,000 in losses. Sonic paused the protocol and began implementing changes to prevent similar state inconsistencies
Details
- Date
- Jul 15, 2026
- Kind
- Hack or exploit
- Method
- Withdrawal Logic Flaw
- How in
- Smart contract bug
- Target
- DeFi protocol
- Chains
- ICP
Reported by
Related incidents
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Sweat Foundation 2026 · Hack or exploit · $3.5M
Maya Protocol 2026 · Hack or exploit · $1.7M
Allbridge Core 2026 · Hack or exploit · $1.6M
Aftermath Perps 2026 · Hack or exploit · $1.1M
Sweat Foundation 2026 · Hack or exploit · $3.5M
Maya Protocol 2026 · Hack or exploit · $1.7M
Allbridge Core 2026 · Hack or exploit · $1.6M
Aftermath Perps 2026 · Hack or exploit · $1.1M
Cite this page
SwanBluechip, "Sonic ICP hack, Jul 15, 2026: $276K lost", Crypto hack history, https://swan-hack-tracker.pages.dev/history/i/htfad73d988f/ (data as of 2026-11-01).