Perform a Full Scan of your hard drive periodically (at least twice a month) to find hidden malware that "Quick Scans" might miss.
Ensure your built-in firewall is turned on to monitor and control network traffic. For instance, Windows has a firewall that is usually on by default. Computer Protection Guide
Set your operating system (OS), browsers, and applications to auto-update . Updates frequently include critical security patches for vulnerabilities that hackers exploit. Perform a Full Scan of your hard drive