Ninety percent of passwords are hackable using software that can crack it within 6 hours. Sixty-five percent of people use the same password everywhere. Stories of cyber hacks can be found in the news nearly every day, which means your personal data is at risk.

We all know we should use strong passwords and a different one for each account. Yet 30 percent of adults have more than 10 passwords to remember, so how can you remember them all? May 4 is National Password Day, so it's a good time to organize your passwords.

Organizing professional Janice Russell offers these ideas for keeping track of all your passwords:

Old School Method

Buy an old address book and use it to write down your passwords. You can alphabetize by the website name. Obviously, someone can steal this book and get to your passwords, but if you keep it hidden at home or at work, it's more secure than using "password" for all your accounts. Plus, who really is going to steal your address book? Note the date on which you last changed the password in pencil so you can change it each year. If you prefer something more official, there is a product for this called an Internet Password Organizer.

"You can also write passwords down in a Word document, on a piece of paper, or in a note program such as Evernote," Russell said. "This approach might not be fully secure, but at least you're using stronger and different passwords."

Technology

Many programs can help you organize your passwords and even remind you to change them frequently. Some of the most popular are LastPass, Dashlane, and 1Password. If you feel comfortable with computers and use them frequently, this may be a good choice. One con to using these systems is that they may be hacked. But you can then change all your passwords fairly easily.

These programs store your passwords and digital records. With some, you can share login information with other people without having to show them the password. The programs will generate strong passwords for you and show you when they were last changed. They also work on both computers and mobile devices. The programs have free and paid versions.

Choosing a System

Russell offers these thoughts for choosing a system:

-Maintainability. Which type of system will be easiest for you to maintain?

-Portability. Do you mainly use several devices in one location or do you use multiple devices in a variety of locations?

-Access. Do you need to share some passwords with others?

"The system you choose for storing passwords depends on your life and needs," Russell said. "There is no right or wrong choice. The best system is the one you will use and maintain. You can always change systems as your needs change."

Avoid These Passwords

If you are not using a system to remember passwords, you are probably limited to what you can remember. However, whatever passwords you create and use, do not use one of these five most common passwords:

123456

password

12345

12345678

qwerty

Russell offers one final tip for people organizing passwords:

"If you have a lot of passwords, organizing them may take some time," Russell said. "Instead of spending a few hours on it, simply organize one password per day until you get through them all."