On November 2023, KyberSwap was exploited in a precision loss, resulting in approximately $48M in losses. That makes the KyberSwap exploit the 12th largest DeFi incident out of 690 documented in our archive.
Attack Mechanics: How the KyberSwap Precision Loss Played Out
Exploit Class Applied to KyberSwap
The KyberSwap incident on November 22, 2023 is classified as a Precision Loss. Rounding errors in token math let the attacker extract small but repeatable profits. In the full archive, KyberSwap is 1 of 8 documented precision loss incidents.
KyberSwap in Context
At $48M, the KyberSwap 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 KyberSwap
The nearest precision loss incident before KyberSwap was KR, 16 days earlier on November 6, 2023 ($15K lost). The same exploit class surfaced again within the precision loss attack surface.
Impact & Recovery for KyberSwap
KyberSwap Loss Figure
The KyberSwap exploit caused $48,000,000 in losses — a major ($10M–$100M) incident and the 4th largest of 214 documented in 2023. This single incident represents 7.5% of all tracked losses that year.
Where KyberSwap Sits Among Precision Loss Attacks
Ranked by loss size, KyberSwap is the 2nd largest of 8 precision loss incidents documented. That puts the KyberSwap loss above the class average of $27.06M.
Timeline Since the KyberSwap Incident
The KyberSwap exploit occurred 2.4 years ago (874 days). The contract, its fork-block, and the attack transaction remain on-chain and forensically reproducible.
Primary Reference for KyberSwap
Public post-mortem / on-chain analysis for the KyberSwap incident: view source.
FAQ
How much did KyberSwap lose?
The KyberSwap exploit in November 2023 resulted in $48,000,000 in losses — the 4th largest of 214 DeFi incidents that year.
When did the KyberSwap hack happen?
The KyberSwap exploit was recorded on November 22, 2023 — 874 days ago.
What type of exploit hit KyberSwap?
The KyberSwap 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 KyberSwap?
Our archive contains 8 documented precision loss incidents. The KyberSwap incident is one of them.
How does KyberSwap compare to the largest Precision Loss attack?
The largest precision loss incident in our archive is BalancerV2 (2025) at $120M. The KyberSwap loss is $48M.
What is the role of MQTT in the proposed system?
To implement a publish/subscribe paradigm for enhancing system security.
What are the main advantages of the Nova proving system over Risc0?
Superior performance in proving and verification times.