For logging on, are there different types of accounts? User, Security, Admin in the 2050 book, it doesn't list them at all. It still refers to needing legit passcodes or a hacked account to be able to log on though. Further, Exploit isn't a program in the 2050s so Hacking+Exploit isn't a roll you can even make. Most of them are Logic+Hacking rolls against the security rating of the node. Any ideas?