Myrna has been advised that she doesn't need Nod32 anymore because of Windows 10 antivirus software. Is that true? Leo says it is. It's called Windows Defender and it's all you need, as long as you keep your computer updated. But they can give you a false sense of security. Even the best antivirus won't save you from your own behavior. If you click on links, you can compromise your security. If you download flash, you can compromise your security. If you click on attachments in email .... well, you get the point.