The best way to protect your computer from malicious threats and viruses is to use a combination of protective measures, such as:
1. Installing an antivirus program and keeping it up-to-date.
2. Using a firewall.
3. Keeping your operating system and software updated.
4. Refrain from downloading suspicious files or clicking on malicious links.
5. Avoid connecting to unsecured Wi-Fi networks.
6. Use a secure web browser and regularly clear your browsing history and cookies.
7. Install Adblocker.
8. Use a password manager.
9. Back up your data regularly.
10. Use two-factor authentication for extra security.