Definition
A race condition occurs when the outcome of a computation depends on the unpredictable timing or sequence of events, particularly when multiple threads or processes access shared data. This vulnerability arises because the system's behavior is not deterministic, leading to unexpected results when operations interleave in an unintended order. On the job, race conditions can cause data corruption, system instability, and security breaches, making them a critical concern for developers and security professionals. For instance, a race condition could allow an attacker to withdraw funds from an account multiple times by interleaving withdrawal requests before the balance is updated. Unlike a deadlock, which occurs when processes are blocked waiting for each other, a race condition involves competing for access to a resource. This concept is frequently tested on cybersecurity certifications such as CompTIA Security+ and CISSP.