What Is Antivirus?
Antivirus is software that is designed to prevent, scan, detect and remove malware (malicious software) from your computer. It helps protect your devices from viruses, spyware, ransomware, spam, phishing, and other forms of cyberattacks. While antivirus programs can’t prevent all cyberattacks, they are an essential tool in reducing your risk of infection and ensuring optimal digital security.
The basic functions of an antivirus program are to identify, protect against and remove threats like viruses and malware. Some antivirus software also offers additional features, such as blocking intrusive pop-ups and enabling users to scan external devices like hard drives and USBs. Some antivirus programs also employ sandboxing, which involves running suspicious files in a virtual environment separate from the operating system to determine if they exhibit malicious behavior.
In the past, most antivirus programs used signature-based detection, which compared the file against a list of known malware characteristics or patterns. However, as the malware landscape continues to evolve, so too do the techniques that antivirus programs use to recognize and protect against it.
The best antivirus programs combine several technologies and approaches to identify and neutralize various types of cyberattacks. While antivirus programs can’t completely protect against all cyberattacks, they remain an indispensable tool in the fight against growing malware and ransomware threats. In addition to installing and regularly updating antivirus software, it is important to practice safe online habits, including avoiding untrustworthy websites and downloading files from reputable sources.