1. Keep your operating system and applications updated with the latest security patches.
2. Install a reliable antivirus and anti-malware software and use it regularly.
3. Clean up your hard drive by deleting temporary files and uninstalling programs you no longer use.
4. Disable any unnecessary startup programs.
5. Keep your device clean and dust-free.
6. Run regular scans to check for malware, rootkits and other malicious programs.
7. Regularly back up your data and keep multiple backups.
8. Use an encrypted virtual private network (VPN) when connecting to public Wi-Fi networks.