On January 2024, XSIJ was exploited in a business logic flaw, resulting in approximately $51K in losses. That makes the XSIJ exploit the 266th largest DeFi incident out of 690 documented in our archive.
Attack Mechanics: How the XSIJ Business Logic Flaw Played Out
Exploit Class Applied to XSIJ
The XSIJ incident on January 30, 2024 is classified as a Business Logic Flaw. A business-logic bug in the contract — such as an incorrect formula or missing state update — lets the attacker withdraw more than their share. In the full archive, XSIJ is 1 of 144 documented business logic flaw incidents.
XSIJ in Context
At $51K, the XSIJ exploit is a minor (<$1M) event compared to the largest same-class incident in our archive — – EulerFinance (2023) at $200M.
Prior Business Logic Flaw Before XSIJ
The nearest business logic flaw incident before XSIJ was MIC, 28 days earlier on January 2, 2024 ($500K lost). The same exploit class surfaced again within the business logic flaw attack surface.
Impact & Recovery for XSIJ
XSIJ Loss Figure
The XSIJ exploit caused $51,000 in losses — a minor (<$1M) incident and the 77th largest of 188 documented in 2024.
Where XSIJ Sits Among Business Logic Flaw Attacks
Ranked by loss size, XSIJ is the 50th largest of 144 business logic flaw incidents documented. That puts the XSIJ loss below the class average of $6.08M.
Timeline Since the XSIJ Incident
The XSIJ exploit occurred 2.2 years ago (805 days). The contract, its fork-block, and the attack transaction remain on-chain and forensically reproducible.
Primary Reference for XSIJ
Public post-mortem / on-chain analysis for the XSIJ incident: view source.
FAQ
How much did XSIJ lose?
The XSIJ exploit in January 2024 resulted in $51,000 in losses — the 77th largest of 188 DeFi incidents that year.
When did the XSIJ hack happen?
The XSIJ exploit was recorded on January 30, 2024 — 805 days ago.
What type of exploit hit XSIJ?
The XSIJ incident is classified as a Business Logic Flaw. A business-logic bug in the contract — such as an incorrect formula or missing state update — lets the attacker withdraw more than their share.
How common is the Business Logic Flaw pattern seen at XSIJ?
Our archive contains 144 documented business logic flaw incidents. The XSIJ incident is one of them.
How does XSIJ compare to the largest Business Logic Flaw attack?
The largest business logic flaw incident in our archive is – EulerFinance (2023) at $200M. The XSIJ loss is $51K.
How does the paper address the long-term security concerns associated with blockchain signatures?
By incorporating the post-quantum signature scheme Dilithium, the paper addresses long-term security concerns against quantum computing threats.
How does the document assess the efficiency and memory of cryptocurrencies?
By using the Hurst exponent to determine if cryptocurrencies have persistent, anti-persistent, or random behaviors.