Virus quarantine and removal: If the software detects a virus, it’ll hold it so that it can’t infect the rest of your device and remove it completely.Scans: Most software has both on-demand and on-access scans that you can schedule, have running constantly or run whenever you please.Behavior-based detection: Behavior-based detection means that the software can find viruses and malware even if they’re not already in existing databases.Here are the basics that every antivirus includes in its software: Avast Antivirus – No Viruses or Malware Found Main Features If it detects anything malicious, it will quarantine and remove the file. In a nutshell, antivirus software will scan your devices for viruses, malware, and other cyber threats.