Since double xp weekend I've gotten around 10 accounts to around level 50 before getting banned (highest got to 80 something) using randomized scripts and no authenticator. Another ~7 accounts that used neither authenticator nor randomized scripts all got banned in less than 24h. I've used authentication on 5 accounts, none have been using randomized scripts and 4 are still around. The 5th got banned for spamming a spell it didn't have.