Today the Official Team Fortress 2 blog let loose info that if any third-party idling applications are used to obtain headwear, the items will be removed. Apparently there has been a bit of an issue with cheaters. They guesstimate that around 5% of the headwear is obtained through cheating.
For those people who obtained your hats legitimately, you will be receiving halos. This is good news for Rust…not so good for Ninboy. For shame.
(Source:Team Fortress 2 Official Blog)