The NT Local Administrator and Shared Passwords

by Daniel Marvin Sept. 1, 2017 via Symantec

There is a Local Administrator account on every NT machine currently deployed. This account can be renamed, but not removed. It is extremely common to find many NT machines in an enterprise sharing the same password for this Local Administrator account. This article will establish that this shared password constitutes a security vulnerability, discuss various steps to mitigate the risk arising from the shared password, and make a case for applying unique passwords to every Local Administrator account in your enterprise.

https://www.symantec.com/connect/articles/nt-local-administrator-and-shared-passwords