Which of the following is a common method for securing passwords?

Using complex combinations of letters, numbers, and symbols is considered a common and effective method for securing passwords. This approach enhances the complexity and strength of passwords, making them significantly harder for attackers to guess or crack through brute force methods. A strong password typically contains a mix of upper and lower case letters, numbers, and special characters, which increases the number of possible combinations. This complexity makes it more difficult for malicious actors to use tactics like dictionary attacks or social engineering to compromise the password.

In contrast, relying on easily guessable personal information or storing passwords in a text file compromises security, as these practices can leave passwords exposed to unauthorized access. Similarly, reusing passwords across multiple accounts increases vulnerability; if one account is breached, all accounts sharing that password are jeopardized. Therefore, utilizing complex combinations when creating passwords is a critical best practice in maintaining strong security measures.