Hack history / 2026 / Hack or exploit
ATOHook
Hack or exploit on Jun 1, 2026 · Smart Contract Vulnerability
ONE SOURCE · 1 SOURCE
Lost
$25K
dollars at the time
Returned
none listed
as the sources state it
Rank
#2,090
among thefts by dollars lost
What happened
ATOHook smart contract was exploited due to a storage slot collision between the rewards mapping and Solady’s fixed ReentrancyGuard slot. The nonReentrant modifier in getReward() wrote a sentinel value that was misinterpreted as a reward balance for a colliding address, allowing the attacker to repeatedly claim and drain a fixed amount of ETH (200 times), stealing approximately 14.41 ETH.
Details
- Date
- Jun 1, 2026
- Kind
- Hack or exploit
- Method
- Smart Contract Vulnerability
- How in
- Smart contract bug
- Target
- not stated
- Chains
- Ethereum
Reported by
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Cite this page
SwanBluechip, "ATOHook hack, Jun 1, 2026: $25K lost", Crypto hack history, https://swan-hack-tracker.pages.dev/history/i/htc7f7aefbcb/ (data as of 2026-10-31).