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An antivirus program is a type of software designed to detect, prevent, and remove malicious software, commonly known as malware, from computers and other devices. Malware includes viruses, worms, Trojans, ransomware, spyware, and adware, among others.

Antivirus software typically works by scanning files, programs, and other data on your computer for known patterns or signatures of malware. It also employs heuristic analysis to identify suspicious behavior or characteristics that may indicate the presence of new or previously unknown threats.

Once a threat is identified, the antivirus software can either quarantine the infected files, remove them entirely, or in some cases, repair them if possible. Additionally, antivirus programs often include real-time protection features that actively monitor your system for suspicious activity and prevent malware from executing.

Having antivirus software installed and regularly updated is essential for maintaining the security of your computer and protecting your personal information from cyber threats.