What Is Antivirus?
Antivirus is software that helps prevent, scan, detect and remove malware (or malicious programs that steal information, disrupt computer operations or gain unauthorized access) from devices and networks. It typically runs as a background process to provide continuous protection, scanning devices, files and systems in real time.
Modern antivirus software relies on one of two detection principles: signature-based and behavior-based. It scans incoming programs and files, compares them against a database of known viruses and other threats, and flags anything suspicious. Some software also uses machine learning and AI to help catch new or zero-day malware.
For businesses, an effective antivirus program is a critical part of the overall cybersecurity solution. It can protect against a variety of threats, from ransomware to phishing attacks. Moreover, it can help secure the data and apps on your network, including cloud storage and remote devices.
When selecting an antivirus, be sure to choose a product that does not slow down your system or device, is easy to use and provides extra safety features like a VPN, password manager or parental controls. You should also check the price, as it can vary considerably, and whether or not you need a subscription model that is valid for multiple devices. Many antivirus packages offer options to automatically receive malware definition updates, so you can be sure you’re always protected. However, it is important to resist alarmist emails that may claim that the “worst virus ever” has been detected and will destroy your devices. These are often hoaxes.