Hack history / 2024 / Hack or exploit
Seneca
Hack or exploit on Feb 28, 2024 · Token Approval Abuse
SOURCES AGREE ON DATE AND LOSS · 5 SOURCES
Lost
$6.4M
dollars at the time
Returned
$5.2M
81% of the loss, as a source states it
Rank
#404
among thefts by dollars lost
What happened
Seneca Protocol's Chamber contract was exploited on February 28, 2024 via improper token approval handling that allowed unauthorized transfers of ~1,900 ETH and 50,000 senUSD. The attacker later returned 80% of funds after being offered a 20% bounty.
Details
- Date
- Feb 28, 2024
- Kind
- Hack or exploit
- Method
- Token Approval Abuse
- How in
- Smart contract bug
- Target
- DeFi protocol
- Chains
- Ethereum, Arbitrum
- Audit (rekt.news)
- Halborn
After the theft
- Returned by the attacker
- $5.3M
“On February 29th, the hacker address of SenecaUSD returned 1537 ETH (approximately $5.3 million) to the deployer address of Seneca.” (SlowMist Hacked) - Recovered or frozen
- $5.2M
“$6.4M taken, $1.2M after recovery or freezing” (Web3 Is Going Great)
Related incidents
LiFi Finance 2024 · Hack or exploit · $10M
Spectral Labs 2024 · Hack or exploit · $250K
MainnetSettler 2024 · Hack or exploit · $66K
Spectral Labs 2024 · Hack or exploit · $250K
MainnetSettler 2024 · Hack or exploit · $66K
Cite this page
SwanBluechip, "Seneca hack, Feb 28, 2024: $6.4M lost", Crypto hack history, https://swan-hack-tracker.pages.dev/history/i/htd27cfd9f2f/ (data as of 2026-10-31).