As are all these other security providers that charge to give you a false sense of protection.
Surf safe. Use your commonsense opening emails etc etc and you wont get caught.
Never use a security provider - never had problems with a virus.
If you are getting emails from the banks, government, library any public institution or big business, ebay, amazon etc- they have all been virus checked before they come to you. Why do you need to check them before you read them???
If you don't know who it is coming from- don't open it. Especially any attachments.
How easy is that??