Definition ∞ A front-end security flaw is a vulnerability present in the client-side code of a website or application. These weaknesses exist in the part of the system that users directly interact with, such as web browsers or mobile apps. Such flaws can permit attacks like Cross-Site Scripting or unauthorized data access. They often arise from improper input validation or insecure coding practices.
Context ∞ For cryptocurrency exchanges and Web3 applications, front-end security flaws represent a critical attack vector, frequently reported in breach analyses. Exploits targeting these vulnerabilities can enable attackers to hijack user sessions, steal credentials, or redirect transactions. News often covers incidents where users’ digital assets are compromised due to these client-side weaknesses, underscoring the necessity for rigorous security audits of all user-facing interfaces.
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