Integer Overflow

Definition ∞ Integer overflow occurs when an arithmetic operation attempts to create a numerical value larger than a variable type can store. This causes the value to wrap around to a minimum, leading to an incorrect result. In smart contracts, an integer overflow can be exploited to manipulate balances or bypass security checks. It represents a significant vulnerability.
Context ∞ Integer overflow vulnerabilities are a well-documented class of security flaws in smart contract development. News reports on blockchain security frequently reference these types of arithmetic errors. Developers consistently work to prevent these critical issues through rigorous testing and code audits.