Create passwords that are difficult for someone else to figure out, Watson says. Include capitalized and lowercase letters, numbers, and special characters or symbols as allowed by your bank's login system. "Update them every six months or every year," Watson says.
"Use different passwords from the ones you have for sites like Facebook and LinkedIn, so the password isn't the same as your brokerage and retirement account," she says. That way, if hackers gain access to a social media account, they won't have automatic access to your mobile banking accounts.