As with performing at-home electrolysis (risk of scarring), I cannot recommend using any third-party tool to modify a Blizzard game's memory addresses under any circumstance. If it's offline, they'll try to make you feel guilty for "reverse-engineering." If it's SP, they'll say that you are compromising the integrity of achievements.
Eventually, your account will draw the short end of the stick in their rounds, and receive a game-wide ban. It doesn't matter how long of a history you've had with their games, customer service will treat you like a second-class citizen, your support ticket will be locked, and chances are that you'll get a discount coupon towards replacement games. There, we see their motivation: money. If they cared about the integrity of their games, they'd simply bar a player from multiplayer or achievements.
In all, I can't recommend any Blizzard game these days. They take their own clickwrap too seriously. I'm not even completely sure why this particular trainer hasn't been discontinued due to this.
[Edited by TacomaYakko, 1/13/2015 9:04:40 PM]
you're right. CH usually stops updating trainers that can get members in trouble. I find it curious as well. Lastly, I can confirm that Blizzard is well aware of this trainer and their anticheat system, Warden, is set to detect all users that use this. Does CH get a kick back for every license repurchase? Just asking because that's what I was told by the blizzard ex-staff... He didn't say CH specifically but did say they give kickbacks to people who make trainers for their games as long as they provide blizz with the code to look for and detect.
[Edited by imaculate, 2/8/2015 8:29:10 PM]
[Edited by imaculate, 2/8/2015 8:29:30 PM]