Nowadays, I am watching everyone being a victim of wannacry ransomware virus. We always think that we can be safe and who will try to hack us. We are nobody and I don't need an Antivirus.
Nowadays, we have seen peoples sharing those ransomware files on internet. In which users can download and send it to their friends.
I will suggest you not to download any suspicious files. They might be via emails, Google docs or from anywhere.
If you receive any mails saying that You have won a lottery, or your domain is going to be expired, or we have shared a sum of 10 lakh in your bank account and other emails. Don't trust them.
I will suggest you to use Antivirus softwares such as Quick Heal, Avast and many other top-notch softwares.
Don't download anything suspicious and make sure that you download torrents from VIP Torrents uploaders only