Like others have said - stay away from illicit websites and don't click links or open attachments in emails. Also make sure you have a a good anti-virus application and add MalwareBytes to your computer. Do NOT use Kaspersky antivirus. Enable the computer's firewall, and have a good firewall on your Internet connection (I recommend Sophos firewalls). Stay safe out there!
why you tell "Do NOT use Kaspersky antivirus "
?