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A good antivirus program prevents malware infections and eliminates current threats, or attacks on specific computer systems, networks, or entire IT systems. The antivirus programs scan websites, files, installed software and user information to look for known malware types They also track day-to-day program behavior to detect potential threats and alert the user.

The majority of antivirus protections provide multiple scanning options such as scheduled, on-access and quick scans. On-access scans look for malware in operating system directories, common file areas, and other common places upon starting. Scheduled scans let you set up a daily monthly or weekly schedule to run a full system scan at a specific time. Fast scans are usually a few minutes long and examine the most frequently used areas on your computer like temporary files and the operating system directory, or memory.

Some programs use heuristics to search for malware, looking for patterns and tendencies that are similar to those found in other programs. This is a more sophisticated method of virus detection than signature-based detection, and it can catch malware that other programs don’t detect. These advanced forms of antivirus detection may not work as well for small businesses, as they are often prone to false positives–identifying secure parts of files and programs as potentially harmful.

As the business world is becoming more interconnected hackers are targeting companies more frequently to snag caches of consumer data or to create an image for themselves through hacktivism (disrupting professional systems for social or political reasons). All businesses must have antivirus protection in place to shield them from cyberattacks.