How it worksEdit
A waterwall is made to bypass the firewall and to infiltrate computers. To manage to get in a computer, you must make sure your waterwall is higher or equivalent to the level of the firewall. This means if you have a level 1.3 waterwall but the computer you are trying to log on has a level 1.4 firewall or higher, you won't be able to log on. But if their firewall is equal or lower to level 1.3, then you shouldn't have any problem logging on the computer, as long as you have a password cracker to crack the password.
Getting a waterwallEdit
Only a few NPC's have waterwalls as they mainly focus on defending themselves.