If you do online banking, NEVER access your online account with a PC or device that you use to log in to social media sites or free e-mail accounts (like Hotmail) or to surf the web. Since these are all highly hackable, keeping one PC dedicated to online banking reduces your chances of getting a bank-account-hacking virus. Of course, that PC should have antivirus installed, be behind a well-maintained and well-monitored firewall, have a strong password and be monitored for suspicious activity.