On August 2023, LeetSwap was exploited in a access control, resulting in approximately $630K in losses. That makes the LeetSwap exploit the 109th largest DeFi incident out of 690 documented in our archive.
Attack Mechanics: How the LeetSwap Access Control Played Out
Exploit Class Applied to LeetSwap
The LeetSwap incident on August 1, 2023 is classified as a Access Control. A privileged function lacks a proper authorisation check, letting an unauthorised caller execute it. In the full archive, LeetSwap is 1 of 77 documented access control incidents.
LeetSwap in Context
At $630K, the LeetSwap exploit is a minor (<$1M) event compared to the largest same-class incident in our archive — Corkprotocol (2025) at $12M.
Prior Access Control Before LeetSwap
The nearest access control incident before LeetSwap was USDTStakingContract28, 17 days earlier on July 15, 2023 ($21K lost). The same exploit class surfaced again within the access control attack surface.
Impact & Recovery for LeetSwap
LeetSwap Loss Figure
The LeetSwap exploit caused $630,000 in losses — a minor (<$1M) incident and the 43rd largest of 214 documented in 2023. This single incident represents 0.1% of all tracked losses that year.
Where LeetSwap Sits Among Access Control Attacks
Ranked by loss size, LeetSwap is the 9th largest of 77 access control incidents documented. That puts the LeetSwap loss below the class average of $636K.
Timeline Since the LeetSwap Incident
The LeetSwap exploit occurred 2.7 years ago (987 days). The contract, its fork-block, and the attack transaction remain on-chain and forensically reproducible.
Primary Reference for LeetSwap
Public post-mortem / on-chain analysis for the LeetSwap incident: view source.
FAQ
How much did LeetSwap lose?
The LeetSwap exploit in August 2023 resulted in $630,000 in losses — the 43rd largest of 214 DeFi incidents that year.
When did the LeetSwap hack happen?
The LeetSwap exploit was recorded on August 1, 2023 — 987 days ago.
What type of exploit hit LeetSwap?
The LeetSwap incident is classified as a Access Control. A privileged function lacks a proper authorisation check, letting an unauthorised caller execute it.
How common is the Access Control pattern seen at LeetSwap?
Our archive contains 77 documented access control incidents. The LeetSwap incident is one of them.
How does LeetSwap compare to the largest Access Control attack?
The largest access control incident in our archive is Corkprotocol (2025) at $12M. The LeetSwap loss is $630K.
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