HackingAlert

With the development of quantum computers, the question of the security of existing cryptographic systems, including blockchain and cryptocurrencies, arises. In this article, we will examine how quantum computing may affect the security of blockchain in 2025 and what measures are being taken to protect it.

According to Odaily, a deep analysis by SlowMist has uncovered how a hacker stole $230 million from Cetus by exploiting a math overflow vulnerability in the get_delta_a function. The flaw bypassed a protection mechanism (checked_shlw), letting the attacker manipulate parameters and trick the system into miscalculating token values.
Example :
Imagine a smart contract says:
“You give me 1 haSUI, I give you 1,000,000 USDT.”
Due to an overflow bug in the math calculation, the attacker made it seem like they only needed 1 token to receive millions in liquidity. In reality, they should have needed a huge amount. By carefully choosing the inputs, the attacker got billions in value almost for free.
Takeaway:
This is a powerful reminder that even a tiny math error in a smart contract can lead to massive losses. Overflow vulnerabilities must be taken seriously. Every calculation needs proper limits, validation, and safe coding practices to avoid this kind of disaster.
Source: Binance square.
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