Sonne Finance
HackedLending · $SONNE · born 2023 · ✝ 2024
An empty-market donation trick drained ~$20M on Optimism.
Sonne Finance was a Compound-fork lending protocol on Optimism. In 2024 an attacker exploited a known empty-market donation vector during a new market's setup to manipulate exchange rates and drain roughly $20M.
- Peak
- ~$20M stolen
- Cause
- Hacked
- Year of death
- 2024
☠️ Cause of death
A flash loan plus a donation into a freshly created, empty lending market manipulated the exchange rate, letting the attacker over-borrow and drain funds.
📓 Lessons left behind
- —Seed new lending markets before opening them.
- —Compound-fork donation bugs were publicly known.
- —Treat every new market listing as an attack window.
🌱 The idea that survived
Safe market listing
Reinforced seeding and locking new lending markets to neutralize donation-based rate manipulation.
#lending#flash-loan#optimism#compound-fork