Make secure passwords and use two-factor authentication: A strong password should generally be a “nonsense word” that is at least 8 characters long and contains a mixture of numbers, symbols, and capitalized letters. However, even with a strong password, you can still be susceptible.Two-factor authentication adds an extra layer of protection to your online accounts by requiring you to enter a code sent to your phone, usually via app or text message, in addition to your password when accessing your online account.