Shouldn't be able to be used maliciously really, the databases are out there - this is just a tool to check if a password/hash has been used & leaked...
Omar and Mikan are really good at the client sided interface stuff :). Hard to link their profile on this device, search in the top right and message...
Please do not abuse or misuse this tool as this is a free tool intended for the large amount of RSPS players who have compromised passwords (~60%).
...