Cryptocurrency [loss] $42M+

"SwissBorg hacked for $41M SOL after third-party API compromise"

2025-09-09 [vendor] SwissBorg [chain] ethereum
Primary Source ↗
Financial Loss $41.5M (41,500,000 USD)
Blockchain(s) Ethereum

Incident Details

Thieves stole 192,600 SOL (~$41.5 million) from a wallet belonging to the Swiss cryptocurrency exchange SwissBorg. The attack is being blamed on a vulnerability in the API of Kiln, a staking partner used for SwissBorg’s “Earn” program.SwissBorg announced that they would be reimbursing impacted customers using treasury funds, and working with security firms and law enforcement to try to recover the stolen assets.

Total loss estimated at $41,500,000.

Technical Details

Initial Attack Vector
Smart contract exploit / hack
Vendor / Product
SwissBorg

Timeline

  1. 2025-09-09 Breach occurred
  2. 2025-09-09 Publicly disclosed