shield Business Logic Flaw

How attackers exploited QTNToken in January 2023 (business logic flaw)

On January 2023, – QTNToken suffered a business logic flaw — the first of 144 documented business logic flaw incidents in our archive where the loss figure was not publicly disclosed but the exploit pattern is documented below.

Attack Mechanics: How the – QTNToken Business Logic Flaw Played Out

Exploit Class Applied to – QTNToken

The – QTNToken incident on January 18, 2023 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, – QTNToken is 1 of 144 documented business logic flaw incidents.

– QTNToken in Context

The – QTNToken incident joins a class whose largest loss to date is – EulerFinance (2023) at $200M.

Prior Business Logic Flaw Before – QTNToken

The nearest business logic flaw incident before – QTNToken was – BRA, 8 days earlier on January 10, 2023. The same exploit class surfaced again within the business logic flaw attack surface.

Impact & Recovery for – QTNToken

– QTNToken Loss Figure

The loss figure for – QTNToken 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 144 business logic flaw incidents in our archive is $6.08M.

Timeline Since the – QTNToken Incident

The – QTNToken exploit occurred 3.2 years ago (1,182 days). The contract, its fork-block, and the attack transaction remain on-chain and forensically reproducible.

Primary Reference for – QTNToken

Public post-mortem / on-chain analysis for the – QTNToken incident: view source.

FAQ

How much did – QTNToken lose?

The – QTNToken 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 – QTNToken hack happen?

The – QTNToken exploit was recorded on January 18, 2023 — 1,182 days ago.

What type of exploit hit – QTNToken?

The – QTNToken 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 – QTNToken?

Our archive contains 144 documented business logic flaw incidents. The – QTNToken incident is one of them.

How does – QTNToken compare to the largest Business Logic Flaw attack?

The largest business logic flaw incident in our archive is – EulerFinance (2023) at $200M. The – QTNToken loss was not publicly disclosed.

Which optimization technique is primarily used in the proposed algorithm?

Particle Swarm Optimization (PSO) with a decomposition approach.

What challenge do cryptocurrencies present to traditional financial systems?

They challenge traditional financial systems with their potential for disintermediation and regulatory evasion.