HOWTO: Log into a Mac for the First Time

Corporate purchased Macs have the default password set to the unique asset tag on the computer they have been assigned. 

The password is case sensitive. "PHS" in uppercase letters. Any "0" in the asset tag is a zero. 

First time users logging into a Mass General Brigham corporate purchased Mac should use the unique asset tag as the password.  

After initially logging in, you can update the password by following the steps in HOWTO: Change Your Password on macOS.