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Antivirus is a software program that protects your computer or other device from malicious viruses, malware and other cyber threats. It can prevent, scan, detect, remove and quarantine these threats.

Viruses are malicious programs that are designed to steal your data, hardware resources and personal information. They can also cause your computer to become unresponsive and crash.

Other types of malware include worms, spyware, trojans and ransomware. They can encrypt your files, block access to the internet or even demand payment before your data can be restored.

Malware and viruses can be difficult to identify, but antivirus software has a variety of ways to catch these threats. These include signature-based detection, which uses known thumbprints for each malware type to spot and quarantine it; and behavioral detection, which analyzes how a malicious program behaves to spot it, blocking it in the process.

The key is to make sure you have the right antivirus software. It’s important to choose one that is compatible with your operating system and has a strong reputation for catching viruses and other threats.

It’s also recommended to run a full scan of your computer to ensure all potential virus threats are found and removed. This can take a while because it takes the time to scan every inch of your computer, but it is essential for keeping your data safe from threats like ransomware.

In addition, antivirus should be installed on all domain controllers in the enterprise. This will help detect and prevent attacks as they begin to spread across the network, preventing them from infiltrating infrastructure systems that clients depend on.