How to avoid karaf.history being accessed by different users from the same host in Fabric?

Issue

• The Fabric console history spans connections by different users
• Using two different users, adm_bmda and bmda, both backed by an LDAPLoginModule, the former having SuperUser role and the latter Monitor role, did the following:

ssh hostName -p 8101 -l ABC
<enter password>
<do some stuff>
Ctrl-d
ssh hostName1 -p 8101 -l xyz
<enter password>
<up arrow>

• You get the last command executed by ABC displayed.Even if it is a sensitive one, such as jaas:useradd user password!