A few weeks ago I mentioned how you could remove SMB1 from your computer. There is a serious vulnerability that is now involved in ransom-ware attacks.
1 – Patch all your Windows boxes. ( Microsoft Security Bulletin MS17-010 – Critical )
2 – Get rid of SMB1. Follow the instructions on the following page. ONLY remove SMB1:
How to enable and disable SMBv1, SMBv2, and SMBv3 in Windows and Windows Server