Be sure to install and update antivirus software

All of your computers and mobile devices should be equipped with antivirus software, firewalls, web filters, and antispyware. Your software should be updated regularly; out-of-date security software offers no defense against the latest threats. Set up automatic updates or at minimum manually apply each upgrade. Be sure this security software is operational when you download something or use an unfamiliar, possibly unsafe Internet connection like public Wi-Fi.