This. Seeing if you can do something before actually doing it falls victim to TOCTOU[0] bugs. Until one actually tries to perform the security-sensitive operati

This. Seeing if you can do something before actually doing it falls victim to TOCTOU[0] bugs. Until one actually tries to perform the security-sensitive operation, there's no guaranteeing that you will succeed. [0]: https://en.wikipedia.org/wiki/Time-of-check_to_time-of-use https://en.wikipedia.org/wiki/Time-of-check_to_time-of-use