Useless. You'd have to build a good wall inside the mote to prevent them "accidentally" throwing each other into it. Then again, they were death row convicts, weren't they?

... and don't wait for one to finish before starting the others.

The article lists a number of actions that the hacker shall not do. Most are to be expected, such as not modifying the system, not bringing it down, not exposing private information. The first and last points in the list are strange though:

• Not using social engineering to gain access
• Not using brute forcing to gain access

Eh? Why are these not valid attack vectors?