I recently used the Hydra tool and want to share my experience. I created a custom word list and placed the password in the 10th position. When I used the command [hydra -l msfadmin -P list.txt <target_ip> telnet], it worked fine. Then, I shifted the same password from the 10th to the 30th row in the list and used the same command again, but it couldn't find the password. However, when I increased the number of threads with [hydra -t 35 -l msfadmin -P list.txt <target_ip> telnet], it worked.

Now, if I shift the password from the 30th to the 60th row and use the same command [hydra -t 35 -l msfadmin -P list.txt <target_ip> telnet], it doesn't work. It seems that I have to provide a value to -t greater than or equal to the row number where the password is located for it to work. However, the limitation of '-t' is that it can't be greater than 64. Can someone explain what might be happening and what the solution could be?