Automated Trade Bans happen in Warframe during endurance missions. It's highly frustrating for players because of how bad the detection system is.
The Steel Path introduced Steel Essence from Eximus. Eximus units require players to do atleast 1 hour of Survival to maximize their spawn chance. This mechanic encourages players to play atleast past the 60 minute mark to effectively farm Steel Essence. However, just around the corner after 3+ hours is when you are in danger of being trade banne