Be carefull when using hack (Banned risk)

I got info from my guild mate that some account got banned because using illegal program. I immediately checked my main account and thanks God it was not banned. After checking my main account, i went to check my secondary account, and BOOMMM!! it was banned. I was surprised because i haven't used this account for almost 2 month and yet it was banned on the latest maintenance (22 jan 2013). FYI i regularly used WPE on both of my account, yet only my secondary account that got banned, then i remember that i used xkhen trainer on my secondary account to teleport in dungeon in order to level up faster.
So, i'm just giving a warn to all of you to think twice or maybe thrice before using trainer after this maintenance, and i don't know myself is it still safe to use WPE or not