Hack history / 2026 / Hack or exploit
Swell
Hack or exploit on Oct 21, 2026 · Hot Wallet Key Compromised
ONE SOURCE · 1 SOURCE
Lost
undisclosed
dollars at the time
Returned
none listed
as the sources state it
Rank
not ranked
collapses, frauds and later news are not ranked
What happened
An attacker gained control of approximately 30 Swell operational keys across multiple networks, including the swETH/rswETH oracle bot. The attacker drained wallet balances, artificially increased swETH and rswETH exchange rates by submitting unbacked reserve values, and redirected EigenLayer reward claims. They also deployed malicious upgrade contracts capable of draining approximately 2,513 ETH, although these upgrades had not been approved or executed when the investigation was published
Details
- Date
- Oct 21, 2026
- Kind
- Hack or exploit
- Method
- Hot Wallet Key Compromised
- How in
- Keys, accounts and infrastructure
- Target
- DeFi protocol
- Chains
- Ethereum, Arbitrum, Base, Hyperliquid
Reported by
Related incidents
Cite this page
SwanBluechip, "Swell hack, Oct 21, 2026: undisclosed lost", Crypto hack history, https://swan-hack-tracker.pages.dev/history/i/ht2690d39711/ (data as of 2026-10-31).