Abusing Time-Of-Check Time-Of-Use (TOCTOU) Race Condition Vulnerabilities in Games, Harry Potter Style

I feel I need to clarify, for legal reasons, that this is nothing to do with any Harry Potter game. The reference is made because we are dealing with spells and magic, and I mean magic in the literal sense, not a reference to application security – although on some/most days it feels like magic.

abusing application application security check game games harry potter legal magic race condition reference security toctou vulnerabilities