The recent announcement that three popular websites (Last.fm, eHarmony.com and LinkedIn) have had password files hacked is another good reminder to check the security of your passwords.
If you or someone you know has used any of these sites, it's a good idea to change the password for it, along with any other site where you use the same password.
These three leaks are just the latest in a long line of breaches at various websites. It's a good idea to change your passwords regularly. The longer you have a password, the more chances there are that someone can crack it.
Here are some tips for keeping a secure password:
Choose a password that will be hard to crack. Use a combination of upper and lowercase letters, as well as numbers and symbols. Avoid using names or common passwords. Hackers use dictionaries of common passwords to help them crack an account. The best password is one that isn't a real word or name. For example: BuGa1!2? is a better password than princess123.
Don't use the same password for all your accounts. If someone gains access to your LinkedIn or Facebook profile, it's not the end of the world ... unless that password also gives them access to your bank account or other personal information.
Avoid using nonsecure networks. An unsecured connection at a café or hotel leaves your passwords and other sensitive information vulnerable to theft. Avoid using these networks as much as possible. If you do need to use an unsecured network, change your password as soon as you get back to a secure connection.
Store your passwords in a secure location. Whether you store your passwords on the computer or in a log book, make sure access to that information is limited.