I've used the following hacks:
MW3 .NET External ESP v2.3 [1.5.388] (multiple times over past couple of weeks)
SearX v5.3 (once last night to get some prestige and modify stats to believable levels)
I deleted them from my computer. I have not used them since the MW3 version update. I've heard bans are delayed. If you were me, woudl you drop the $15 on the DLC? or wait a bit to see if the account gets banned?