Time has started serving ads to AI agents 
digiday.com

Put another way, the ads give brands like Ally and the non-profit professional organization Project Management Institute another lever to pull on how they show up in generative search. LLMs can pick up a brand’s information from the ad and index it, which can then shape AI-generated responses, which in turn, can influence humans using those AI answer engines.

Maybe my idea of “poisoning” AIs with a text hidden by steganography is not that crazy.