What Is Password Strength?

Password strength refers to how effective a password is against guessing or brute force cracking. Generally speaking, the average number of attempts by an unauthorized visitor to get the correct password. The strength of a password is related to its length, complexity, and unpredictability. A strong password can reduce the overall risk of a security breach, but it does not reduce the need to take other security measures.

Use password

A strong password is usually long enough and randomly arranged, so it takes a lot of time to crack. Here are some examples of strong passwords (because the following examples have been published, they are no longer secure and are only examples):

• t3MEIfreryeT45410A -not a dictionary word, existing

  Generally, computer users are advised "Don't write down your password anywhere for any reason" or "Don't use the same password for different accounts." In fact, a computer user usually has more than a dozen password-protected accounts and uses the same password. Users who try to use different passwords often cannot remember which account corresponds to which password because there are too many passwords. At a security conference in 2005, an expert from Microsoft proposed: "I think the password policy should be changed to you can write your password. I have 68 different passwords. If I don't allow them to be written down, I will What to do? I have to use the same password. " A good and practical recommendation is to use a simple password for a low-security account (such as bbs) and a strong password for a high-security program (such as online banking). ^[2]

  Once the password is written down, the user cannot place it in some obvious places, such as contacts, drawers, etc. The worst and probably the most common case is when the password is written on a note paper and placed near the computer. It is safer to keep it in a safe.