Secure user directory type question

[Jason Yeung]

Hi all,

In our current setup, we have a user directory (type: Microsoft Active Directory)that connects to our internal Active directory. All of our staff users are in this directory. Recently our network was compromised and in order to isolate the machines, we disabled this user directory as it potentially is not safe.

We would eventually have to enable this user directory, but don't want to keep the Microsoft Active directory type. I was wondering if there are alternate user directory types I can use that is more secure. It would still need to validate our internal Active Directory. We currently have:
LDAP
Internal with LDAP Authentication
Atlassian Crowd
Atlassian JIRA

Sincerely,

Jason