Antivirus software protects you from online threats, like viruses, malware and other malicious files. Antivirus software detects these files and remove them from your device before they cause any harm.
Scanning at least once a week is a good idea. If you do a lot of online activities, consider scanning your device more regularly.
Detection of viruses is made by looking for signs of a virus the software knows about. Keeping your antivirus software up-to-date helps prevent this issue.
Computer viruses exist to be used for malicious purposes. Stealing credit card details or holding your files to ransom is often the target. Be sure to keep your operating system and antivirus software updated.
You should only have one antivirus software installed on your device. If you change to a different antivirus software, uninstall the old one first before installing your new antivirus software.