How One Missing Assert Drained $1.14M From Aftermath Finance — A Signed Integer Exploit on Sui

A technical breakdown of the Aftermath Finance perpetuals exploit (April 29, 2026). How a negative fee value bypassed validation, inflated collateral, and allowed an attacker to drain $1. 14M USDC in 36 minutes — and what a single line of code would have prevented.

Source: [Dev.to](https://dev.to/mehvetero/how-one-missing-assert-drained-114m-from-aftermath-finance-a-signed-integer-exploit-on-sui-1db3)