Nefarious game makers appear to be leveraging a chat-based Roblox exploit that results in automatic account bans for unsuspecting users.

Roblox Trade Tower lets players become the richest virtual traders in the world. Alongside trading activities and jackpots, the game provides several opportunities to secure more currency and items.

Roblox is implementing fixes for a chat moderation exploit that resulted in a wave of automatic bans, but the offenders say there’s more to come.