In prior versions of the game, Trade Offers allowed users to exchange items directly rather than rely on the game's auction mechanism.
Trade Offers were in the game so players could barter or share items with friends, but the system quickly became the domain of coin sellers.
"Although some honest players used this feature to trade with friends, it became one of the methods used by coin sellers to sell and move coins," said EA in a post on the game’s forum.
"Account phishers also abused Trade Offers by moving stolen players and coins after wrongfully gaining access to unsuspecting FUT player accounts.
"This will also address 'bid bumping', where people would try and trick others into bidding far more than they wanted for a player item,” EA added.
"It was a tough decision, but this is the right step towards improving security, showing cheaters the red card, and keeping FUT safe for all FIFA fans."
EA confirmed that the "Buy It Now" pricing option for players will remain in the game, despite it also being an avenue – albeit an open and obvious one – for coin sellers.
The FUT web app relaunches this week, and will require Origin login verification from this year onward.
FIFA 15 is due out September 26 on Xbox 360, Xbox One, PlayStation 3, PlayStation 4, PS Vita, Windows PC, Wii U, Wii, and Nintendo 3DS.