I launched a new SP game with no mods in EA, all default settings except renaming allowed. I played Tien Chi, the random computer opponents were Agartha, Pangaea and Oceania. During the 50 turn test I didn't get a single cheat message (and yes, I have cheat detection on

).
The cheat messages I got yesterday were in a MA game that I had started under 3.21, with CBM 1.41 enabled. Without thinking further I deleted the install and reinstalled from scratch, should have taken a backup of that first...