Symantec Antivirus (now Norton Antivirus) is software that protects computers from a variety of threats, including viruses, spyware, trojans, and other malware. Benefits of Symantec Antivirus include:

1. Layered protection: Symantec Antivirus offers multiple layers of protection, each providing better protection against different threats.

2. Advanced detection and blocking technologies: Symantec Antivirus uses advanced algorithms and technologies to detect and block malware, including strategies to automatically detect new threats.

3. Multi-Platform Support: Symantec Antivirus is multi-OS compatible, including Windows, macOS, and Linux.

4. Proactive Protection Technologies: Symantec Antivirus uses proactive protection technology to detect threats before they occur and block them before they can cause harm.

5. User-friendly interface: Symantec Antivirus has an intuitive interface that makes it easy to configure protection settings and manage the program.

6. High speed: Symantec Antivirus has minimal impact on your computer's performance and provides you with a fast speed.

7. Cloud technology: Symantec Antivirus integrates with cloud services, which allows you to manage your computer protection from anywhere in the world.

Overall, Symantec Antivirus (Norton Antivirus) is a reliable and effective solution for protecting your computer from viruses and other malware, which provides multi-layered protection, advanced detection and blocking technologies, proactive protection, user-friendly interface and support for multiple platforms.