On May 2024, Sonne Finance was exploited in a precision loss, resulting in approximately $20M in losses. That makes the Sonne Finance exploit the 20th largest DeFi incident out of 690 documented in our archive.
Attack Mechanics: How the Sonne Finance Precision Loss Played Out
Exploit Class Applied to Sonne Finance
The Sonne Finance incident on May 14, 2024 is classified as a Precision Loss. Rounding errors in token math let the attacker extract small but repeatable profits. In the full archive, Sonne Finance is 1 of 8 documented precision loss incidents.
Sonne Finance in Context
At $20M, the Sonne Finance exploit is a major ($10M–$100M) event compared to the largest same-class incident in our archive — BalancerV2 (2025) at $120M.
Prior Precision Loss Before Sonne Finance
The nearest precision loss incident before Sonne Finance was CCV, 138 days earlier on December 28, 2023 ($3.2K lost). The same exploit class surfaced again within the precision loss attack surface.
Impact & Recovery for Sonne Finance
Sonne Finance Loss Figure
The Sonne Finance exploit caused $20,000,000 in losses — a major ($10M–$100M) incident and the 5th largest of 188 documented in 2024. This single incident represents 5.4% of all tracked losses that year.
Where Sonne Finance Sits Among Precision Loss Attacks
Ranked by loss size, Sonne Finance is the 3rd largest of 8 precision loss incidents documented. That puts the Sonne Finance loss below the class average of $27.06M.
Timeline Since the Sonne Finance Incident
The Sonne Finance exploit occurred 1.9 years ago (700 days). The contract, its fork-block, and the attack transaction remain on-chain and forensically reproducible.
Primary Reference for Sonne Finance
Public post-mortem / on-chain analysis for the Sonne Finance incident: view source.
FAQ
How much did Sonne Finance lose?
The Sonne Finance exploit in May 2024 resulted in $20,000,000 in losses — the 5th largest of 188 DeFi incidents that year.
When did the Sonne Finance hack happen?
The Sonne Finance exploit was recorded on May 14, 2024 — 700 days ago.
What type of exploit hit Sonne Finance?
The Sonne Finance incident is classified as a Precision Loss. Rounding errors in token math let the attacker extract small but repeatable profits.
How common is the Precision Loss pattern seen at Sonne Finance?
Our archive contains 8 documented precision loss incidents. The Sonne Finance incident is one of them.
How does Sonne Finance compare to the largest Precision Loss attack?
The largest precision loss incident in our archive is BalancerV2 (2025) at $120M. The Sonne Finance loss is $20M.
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They provide an opportunity to test whether prices play an active role in determining corporate decisions.
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