Password Learning Techniques

• Try default passwords used with standard accounts shipped with the system
• Exhaustive try of all short passwords
• Try words in system’s dictionary or list of likely passwords (hacker bulletin boards)
• Collect information about users (full names, names of spouses and children, pictures and books in their office, related hobbies)
• Try users’ phone numbers, social security numbers, room numbers
• Try all legitimate license plate numbers
• Use a trojan horse
• Tap the line between a remote user and the system