Cloak

Cloak is special systemware program by InfoNet. DataFortress is shrouded in a VR/InvisibiIity subroutine that essentially erases it from the Net—while still allowing you access. If you have outsiders that you want to have access. just give them the Net co-ordinates. and the password. They will be able to get in. but no one else can see the Fortress. so they won't!

Note: it has been found that the Cloak routine can impair processing power and is still very large. Cloak hides the ENTIRE DATAFORTRESS behind an Invisibility subroutine (Strength: 6). It is also very expensive. both in terms of processing power and memory. It uses up 5 MU per CPU, and neutralizes an entire point of INT per CPU (in other words. a computer with 4 CPUs and a Cloak would have an effective INT of 8 while running Cloak). This sudden lobotomization can really freak with slightly unstable AIs. You are Warned.

Source

 * Rache Bartmoss Guide to the Net, pg.149, 150