As of 3 Nov 2026, JOJO has 1 audit report on Trustblock, by CertiK, dated 9 Dec 2022. That report lists no open critical findings.
Record last updated . It holds audits, findings and contracts up to Nov 2026, and incidents up to Oct 2026. Trustblock does not review code.
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Statuses are the security firm’s own, from each report.
| Severity | Open | Acknowledged | Fixed |
|---|---|---|---|
| Critical | 0 | 0 | 0 |
| High | 0 | 1 | 0 |
| Medium | 0 | 2 | 0 |
| Low | 4 | 0 | 11 |
In the contract `JOJOOperation` the role `_owner` has authority over the functions shown in the diagram below. Any compromise to the `_owner` account may allow the hacker to take advantage of this authority and extract all the funds via setting of bad `RiskParams` (fake Oracle, unexpected `liquidationThreshold` and `insuranceFeeRate`) . 
Open the report`validOrderSender` can "replay" a cancelled off-chain order or fulfill makers' orders in wrong order. `validOrderSender` prepares a set of orders to execute the `Perpetual.trade()`. Each order should be signed by `order.signer` or by her operator. However, the cancelled order can still be used until it expires. `nonce` part of the order is only used to distinguish orders, it is never checked on-chain and not "consumed" after cancellation. `validOrderSender` can use the taker order and fulfill her own maker order with the worst possible price, ignoring all the other maker orders with better prices.
Open the reportFunction `setPerpRiskParams()` allows to deregister the Perpetual from the Dealer even if there are open positions. Users with positive `credit` will suffer loss, users with negative will gain profit. It would be more fair to forcefully close all the positions before deregistering.
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