How to secure "My Passport" USB plugged

My Cloud OS 3 Personal & Network Attached Storage My Cloud
4

Thank you for your responses.

There is a similar post with the same issue:  http://community.wd.com/t5/WD-My-Cloud/Security-hole-with-shares/td-p/649659

So, I don’t think reset both My Cloud and My Passport is a solution. This is maybe a My Passport specific problem. Do you have any idea?

Thank your for your help.

Regards,

Julien