Can I start L0phtCrack brute forcing at a certain password?
Yes. Maybe you know the first character of a certain password you are looking to crack. Just follow the instructions in question #1 and set LastBruteIteration to start with the first character you are looking for with the number of digits you want to start with. For example if you know the password starts with C and is 7 chars or longer you would use: LastBruteIteration=CAAAAAA Don’t put in any characters that are not in the CharacterSet, always use uppercase, and never put in more than 7 characters. One caveat is that if the password is longer than 7 characters you will miss some of the possibilities for the second half. You should run L0phtCrack starting from scratch to discover the second half once you know the first. Unles the password is 14 characters long finding the second have should be quick.