Final answer:
The best password security strategy is to use complex passwords that include a mix of characters, and employ other security measures.Option 3: Using a combination of upper and lower case letters, numbers, and special characters.
Step-by-step explanation:
The best approach to establishing strong security with passwords is Option 3: Using a combination of upper and lower case letters, numbers, and special characters. This method makes a password much harder to guess or crack using brute force methods. Simple, easy-to-remember passwords are usually weak and can be easily compromised. Avoiding password managers is not advised; in fact, they can help you generate and store complex passwords that are more secure.
Sharing passwords with friends and family significantly increases the risk of your passwords being mishandled or accidentally disclosed. Increasing security also involves other practices such as enabling two-factor authentication, being educated to avoid scams, and using anti-virus software on your computer. Furthermore, for personal financial protection, you should always protect your credit and debit cards, secure your mailbox against theft, use PINs that cannot be easily guessed, and notify your bank when you change address or phone number.