Detecting attacks on secured computer resources, including gathering user security data for a user having a user password protecting resources on a computer system; generating an alert password that is easier to crack than the user password; and deploying the alert password on the computer system for use in detecting password attacks on the protected resources. These structures are filled at relatively low temperatures of no more than about 300 C. When the top plate is mated to the bottom plate, a path of fluid communication is established from the base face channels to the through holes to allow for inert gas to pass through the target.