.."patches"?
there is only the 1.23 patch (well there used to be more patches but you shouldn't care about their existance) and this is the only one you'd HAVE TO get in order to play online.

i'd like to note that the "Download Patches" page in j2o is outdated (Mike said he'd update it sometime)
all files you really need nowadays are the 1.23 patch, Carrotade (server-side only), Seek Hole Fix (which you'd probably have to run along with JJ2) and perhaps Project Controller (just for modifying your server settings when necessary).

oh, and stop being a paranoid android.

that's all, glad to be helpful.