Can you disable logging in as other users over ssh?
60677
What is the "wheel" user in OS X?
103686
Can I create an SSH user which can access only certain directory?
123485
How can I limit other (administrator) users access to my profile?
151034
SSH: completly disabling password authentication
112800
How do you disable anonymous login?
28156
How to block specific username from ssh?
68563
How do I restrict a specified SSH user to connect only from one IP or hostname?
59145
SSH to untrusted machine
140643
Is it possible to disable default login pages in community?
147518
Remote desktop - With other user still logged on?
61493
How to stop my machine asking for multiple passwords when I log in?
141840
How can I restrict program access to other users?
30487
How to force a login for an administrator when using Remote Desktop Connection?
6069
How do I disable the guest session?
117182
Enforce SSH key passwords?
71851
How to temporarily disable sudo credentials timestamp timeout?
119958
Disable a user's login without disabling the account