That's a great question! These passwords are considered weak for a few key reasons, as mentioned in the step:
- Simplicity and Predictability: Many of them are simple numeric sequences (
123456,12345678,1234), common dictionary words (password,dragon,mustang), or easily guessable keyboard patterns (qwerty). - Frequency of Use: Unfortunately, these are very common choices that people still use. Attackers know this, and lists like the one we're looking at are compiled from past data breaches, indicating their widespread use.
- Vulnerability to Dictionary Attacks: Because they are common words or simple patterns, they are easily cracked by "dictionary attacks." This type of attack uses a pre-compiled list of common passwords (like the
500-worst-passwords.txtfile) or dictionary words, rather than trying every single possible character combination. This significantly speeds up the process for attackers.
In essence, a strong password is one that is long, complex (includes a mix of uppercase and lowercase letters, numbers, and symbols), and unique, making it much harder for attackers to guess or crack.
Does that help clarify why these specific passwords are weak? Let me know if you have any more questions!