Race Condition Hackviser -

A race condition happens when multiple threads or processes access shared data simultaneously without proper synchronization. In web applications, this usually manifests as a flaw:

A race condition occurs when a system's behavior depends on the uncontrolled or sequence of multiple operations. In web security, this often manifests as a Time-of-Check to Time-of-Use (TOCTOU) flaw: the server checks if an action is valid (e.g., checking a file type) but then processes that action in a separate step. If an attacker can slip a malicious request into the tiny "race window" between the check and the use, they can bypass security controls. Breaking Down the HackViser Challenge race condition hackviser

We need to constantly flip a file between two states: A race condition happens when multiple threads or