Choose a good one, change it regularly and don’t share it!!
Here is a review of tactics to use when choosing a password:
- Don’t use passwords that are based on personal information that can be easily accessed or guessed
- Don’t use words that can be found in any dictionary of any language
- Develop a mnemonic for remembering complex passwords
- Use both lowercase and capital letters
- Use a combination of letters, numbers and special characters
- Use different passwords on different systems