In its most recent patch note for CS:GO, Valve has removed the ability of players to trade container keys between different accounts permanently. The CS:GO in-game case drops require specific keys to open them and Valve previously allowed Steam users to trade the keys and cases via its own internal marketplace on Steam, but recently Valve ruled out that possibility with its October 28th update.
Valve officially released a statement explaining their move. The statement read, “In the past, most key trades we observed were between legitimate customers. However, worldwide fraud networks have recently shifted to using CS:GO keys to liquidate their gains. At this point, nearly all key purchases that end up being traded or sold on the marketplace are believed to be fraud-sourced. As a result we have decided that newly purchased keys will not be tradeable or marketable.” Valve further said in its defense, “For the vast majority of CS:GO users who buy keys to open containers, nothing changes; keys can still be purchased to open containers in their inventory. They simply can no longer be traded or transacted on the Steam Community Market.”