What is detectable?

I am wondering what software CCP is detecting and banning people for? I want to use AutoIt3 to automate some tasks that are awfully repetitive, like adjusting prices in the market. I've done this in the past without an issue, but now I keep hearing about people being banned for mouse clickers or w/e. Any information on this?

I was using autoit sometimes but not nonstop. Just few hours (just to challange my coding skills). So far its few month ago and I am still not banned.

It is a mining bot. It can go mining come back and unload ores to station and go mining again. (Hardcoded)

What I did is I used for every movement a random sleeptime and also random speed. So if you move mouse somtimes its more delayed and sometimes its shorter. Also mousespeed is random.

But now I am working with C# but not finished. The wrote my own pixelsearch library and also my own imagesearch (sadly imagesearch is slower than from what I use in Autoit but still ok :)). It is almost working full in background but only mouseclicks are not working in background.. this could cost me a ban while I am researching it xD. But still nothing happened and I hope it will stay so.