How Does Antivirus Work?
Antivirus (AV) software protects computers, mobile devices, and networks from malware threats by scanning for suspicious programs and files that may have been sent or downloaded from the Internet or other sources. It also scans for known viruses and malware signatures and helps users remove them from their devices. Antivirus protection usually runs in the background and automatically monitors and scans device files, folders, and apps to identify and prevent cyberattacks.
Antivirus is an essential tool for protecting personal data, businesses, and even governments from ransomware, identity theft, hacking, scams, phishing, malware, spyware, and other cyber threats that can threaten security and privacy or cause financial or reputational damage. The escalating number of cyberattacks has driven significant growth in the antivirus software industry, with projections for steady expansion over the next few years.
How does antivirus work?
AV programs begin by checking all the files on your computer for possible malware. They do this by comparing a file’s code to a database of known viruses and malware. If the program finds a match, it flags the file for further analysis or removal. Some programs then isolate the malicious program from other files and applications on your computer, and then deletes or quarantines it.
Some antivirus programs update their malware definitions regularly to stay ahead of new and emerging cyberattacks. Look for this information in the product’s documentation or online. Also, avoid clicking on or downloading any links or attachments in suspicious emails, especially those claiming to contain the “worst virus ever” or that they will destroy your hard drive.