install premium antivirus examples like Eset (if using a desktop device) because there are so many viruses or malware there that can take over your wallet, why use premium instead of using free?
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I don't think antivirus (premium/non-premium) can help our wallet safe. Antiviruses are only for those viruses or malware which also can be acquired by our own selves or own mistakes/ just being dumb.
The greatest protection for me is being educated and not being dumb, always think twice before clicking anything, especially if you are not familiar with what are you doing.
If you fall into fishing, your antivirus is no use even how much you bought it.