On November 2023, KR was exploited in a precision loss on BNB Chain, resulting in approximately $15K in losses. That makes the KR exploit the 356th largest DeFi incident out of 690 documented in our archive.
Attack Mechanics: How the KR Precision Loss Played Out
Exploit Class Applied to KR
The KR incident on November 6, 2023 is classified as a Precision Loss. Rounding errors in token math let the attacker extract small but repeatable profits. In the full archive, KR is 1 of 8 documented precision loss incidents.
KR in Context
At $15K, the KR exploit is a minor (<$1M) event compared to the largest same-class incident in our archive — BalancerV2 (2025) at $120M.
Prior Precision Loss Before KR
The nearest precision loss incident before KR was Hopelend, 19 days earlier on October 18, 2023 ($825K lost). The same exploit class surfaced again within the precision loss attack surface.
Target Chain: BNB Chain
The vulnerable KR contract was deployed on BNB Chain — one of 23 documented incidents on BNB Chain. This determines the block cadence, mempool, and forensic tooling available to investigators.
Impact & Recovery for KR
KR Loss Figure
The KR exploit caused $15,000 in losses — a minor (<$1M) incident and the 133rd largest of 214 documented in 2023.
Where KR Sits Among Precision Loss Attacks
Ranked by loss size, KR is the 6th largest of 8 precision loss incidents documented. That puts the KR loss below the class average of $27.06M.
Timeline Since the KR Incident
The KR exploit occurred 2.4 years ago (890 days). The contract, its fork-block, and the attack transaction remain on-chain and forensically reproducible.
Primary Reference for KR
Public post-mortem / on-chain analysis for the KR incident: view source.
FAQ
How much did KR lose?
The KR exploit in November 2023 resulted in $15,000 in losses — the 133rd largest of 214 DeFi incidents that year.
When did the KR hack happen?
The KR exploit was recorded on November 6, 2023 — 890 days ago.
What type of exploit hit KR?
The KR incident is classified as a Precision Loss. Rounding errors in token math let the attacker extract small but repeatable profits.
Which blockchain was KR deployed on?
The KR contract was deployed on BNB Chain, one of 23 documented incidents on that chain.
How does KR compare to the largest Precision Loss attack?
The largest precision loss incident in our archive is BalancerV2 (2025) at $120M. The KR loss is $15K.
How does the post-processing defense strategy differ from traditional defense methods?
It operates independently of the classifier and does not affect accuracy or involve retraining.
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