[Classic] One raid log has been uploaded twice for cheating the leaderboard

To whom it may concern,

These two logs below are actually the same raid.

As you can tell, the first one starts late and the second one ends late to cheat the system. In this way, this guild shamelessly takes the first and second places on the leaderboard. Just wondering if there is a way to detect this kind of nasty things? And if this kind of abuse action will be punished eventually.