What are weak passwords most vulnerable to?

Weak passwords are most vulnerable to brute-force attacks. In a brute-force attack, an attacker systematically attempts every possible combination of characters until the correct password is found. This method takes advantage of poorly constructed passwords that may be too short, lack complexity, or contain easily guessable information like common words or patterns. The strength of a password is critical because the longer and more complex it is, the exponentially harder it becomes to crack through brute-force methods.

For instance, if a password is particularly weak, an attacker can quickly use automated tools to test combinations and gain unauthorized access to accounts or systems. Strong passwords, on the other hand, significantly reduce the risk of being compromised this way, as they require a considerably longer time to crack, thereby offering better protection against such attacks.