On April 2022, Rikkei Finance suffered a oracle manipulation — the first of 19 documented oracle manipulation incidents in our archive where the loss figure was not publicly disclosed but the exploit pattern is documented below.
Attack Mechanics: How the Rikkei Finance Oracle Manipulation Played Out
Exploit Class Applied to Rikkei Finance
The Rikkei Finance incident on April 15, 2022 is classified as a Oracle Manipulation. The attacker skews the price feed the protocol trusts — often via a thin DEX pool — forcing the contract to misprice collateral. In the full archive, Rikkei Finance is 1 of 19 documented oracle manipulation incidents.
Rikkei Finance in Context
The Rikkei Finance incident joins a class whose largest loss to date is – BonqDAO (2023) at $88M.
Prior Oracle Manipulation Before Rikkei Finance
The nearest oracle manipulation incident before Rikkei Finance was ElephantMoney, 3 days earlier on April 12, 2022. The same exploit class surfaced again within the oracle manipulation attack surface.
Rikkei Finance Vulnerability Signature
The primary source categorises the Rikkei Finance exploit specifically as “Access control & Price Oracle Manipulation”. This narrower label is entity-specific: it reflects how the Rikkei Finance contract failed, rather than the broad oracle manipulation pattern alone.
Impact & Recovery for Rikkei Finance
Rikkei Finance Loss Figure
The loss figure for Rikkei Finance is not publicly disclosed. The primary source reports the exploit in non-USD terms, so no USD estimate is published here. For reference, the average loss across 19 oracle manipulation incidents in our archive is $9.69M.
Timeline Since the Rikkei Finance Incident
The Rikkei Finance exploit occurred 4 years ago (1,460 days). The contract, its fork-block, and the attack transaction remain on-chain and forensically reproducible.
Primary Reference for Rikkei Finance
Public post-mortem / on-chain analysis for the Rikkei Finance incident: view source.
FAQ
How much did Rikkei Finance lose?
The Rikkei Finance loss figure is not publicly disclosed. The primary source reports the exploit in non-USD token terms, so no USD estimate is published here.
When did the Rikkei Finance hack happen?
The Rikkei Finance exploit was recorded on April 15, 2022 — 1,460 days ago.
What type of exploit hit Rikkei Finance?
The Rikkei Finance incident is classified as a Oracle Manipulation. The attacker skews the price feed the protocol trusts — often via a thin DEX pool — forcing the contract to misprice collateral.
How common is the Oracle Manipulation pattern seen at Rikkei Finance?
Our archive contains 19 documented oracle manipulation incidents. The Rikkei Finance incident is one of them.
How does Rikkei Finance compare to the largest Oracle Manipulation attack?
The largest oracle manipulation incident in our archive is – BonqDAO (2023) at $88M. The Rikkei Finance loss was not publicly disclosed.
What are the experimental results and performance evaluations of the system?
The system is validated through experiments, showing its effectiveness in privacy protection and transaction efficiency.
What period does the study cover?
January 2019 to June 2020.