The popular ransomware such as Locky, Osiris etc. were all mostly circulated through Gmail attachments. Hopefully, this step from Google will reduce the cases of ransomware attacks. Now, Gmail cannot be used to send documents that contain malicious macros, password-protected archives and suspicious files etc. This might prove a good step from Google. From your side, it is important to be careful with the inbox hackers and tricks executed by the cyber-cribbers. Don’t trust unknown senders and open attachments. Be careful about lack of information, grammar mistakes, suspicious senders name etc. because there could be ransomware attachment with them.