In theory, it should. In practice? Who knows.

Outside of the same authentication domain with bad auth token practices (windows) the hash almost always is useless elsewhere. Salting increases the complexity and thus size of hash tables or hash comparison (rainbow tables), but if your manage to break or brute force the entries, salted or not, the secret often is reused by many users.

Provided that its hashed with salt / diff methods, sure - but how can you be sure?

It can still be cracked