Hack history / 2025 / Hack or exploit

SwissBorg

Hack or exploit on Sep 9, 2025 · API Key Compromised

SOURCES AGREE ON DATE AND LOSS · 4 SOURCES

Lost

$41.5M

dollars at the time

Returned

none listed

as the sources state it

Rank

#124

among thefts by dollars lost

What happened

SwissBorg's SOL Earn program lost 192,600 SOL (~$41.5M) when staking partner Kiln's API credentials were compromised. Attacker embedded malicious authorization instructions in unstaking transactions to transfer withdrawal authority to attacker-controlled addresses.

Details

Date: Sep 9, 2025
Kind: Hack or exploit
Method: API Key Compromised
How in: Keys, accounts and infrastructure
Target: Centralized exchange
Chains: Solana, Ethereum

Reported by

DefiLlama ↗
rekt.news ↗
SlowMist Hacked ↗
Web3 Is Going Great ↗

Related incidents

SwissBorg 2023 · Hack or exploit · $4.5M

Cite this page

SwanBluechip, "SwissBorg hack, Sep 9, 2025: $41.5M lost", Crypto hack history, https://swan-hack-tracker.pages.dev/history/i/ht69e1a1354a/ (data as of 2026-10-31).

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