Noted recently there are serious threats of ransomware, we suggest client to be more careful with the SAP network shared folders that has full Read/Write access. 

Recommend to create a new 'SAP Users' domain user group and assign only SAP users to have access to SAP Shared folders. Suggest to split the location for SAP Installation and SAP data folder as below:

SAP Client Installation Folder
\\[SAP Server]\B1_SHR     (C:\Program Files (x86)\SAP\SAP Business One Server\B1_SHR)
SAP Path and Attachment Folder 
\\[SAP Server]\DATA     (E:\[SAP shared folder name])

Note: SAP Path setup is located in General Settings - Path