Bukkit

A user reported this on my server, /ps view glass can be mined with a silk touch pick allowing for free glass

There's only two ways to alter the view for the player other than a client side mod, and that is to either place the glass temporarily like I'm doing or to alter the data sent to the client's buffer which could cause lag on the client side.

If you are really worried about free glass via silk touch, then simply block the use of the /ps view command.

The permission to use /ps view is: protectionstones.view

It is turned on by default so depending on your permissions plugin you may be able to shut if off directly from your permissions or open the protectionstones.jar with an archive program like 7zip, then edit the plugin.yml file inside the jar.

Find this section:

protectionstones.view:

description: Allows Use of the View Command

default: true

And change the "default: true" to "default: false"

Don't forget to reload your plugins so it will take effect.