AD group Members list

Question

I can use GET-ADGroupMemeber AD powershell command to list the groups of what I need. However, I need a way that if someone adds a person to a group that it will trigger an email alert and send me an email with the new person added to that group. For
example,  if using a power shell script where if someone adds a person to the domain admins group would it be able to trigger an email alert as soon as the person get added and send me an email of who the new user was added to the group.
Is this possible using a power shell script with schedule task?

Answer 1

you can do this in different ways
for example, create 2 files or arrays and compare both and output the differences.
Keep track of the count of Members in the admin group. When there's a positive difference it means a user was added.
Below you can find some helpfull things to achieve what you want.
Compare-Object :
http://blogs.technet.com/b/heyscriptingguy/archive/2013/11/21/3610554.aspx
I've used it in the following way:
Compare-Object (Get-Content $file1) (Get-Content $file2) | where {$_.SideIndicator -eq "<="}
for the Send-MailMessage see
-> http://technet.microsoft.com/en-us/library/hh849925.aspx
I also found this script where they also use the compare option to get this done
-> http://www.lazywinadmin.com/2012/03/powershell-monitor-membership-change-to.html
or
-> http://gallery.technet.microsoft.com/Monitor-Active-Directory-4c4e04c7