The user id Nimbus which is created during installation of nimsoft Robot in each and every AS400 server.
How to reset the default password of nimbus user ? As it's looks to be the cyber related issue for customer.
UIM : 20.3
OS : AS400
Run the below command from the command line of AS/400
CHGUSRPRF USRPRF(USRPROFILE) PASSWORD(NEWPWD)
Replace USRPROFILE and NEWPWD with NIMBUS and the new password needed.