"The cost-effective nature of AI makes it highly plausible we're moving towards an agent vs agent future."

Sounds right. I assume we will all have AI agents triaging our emails trying to protect us.

Maybe we will need AI to help us discern what is really true when we search for or consume information as well. The amount and quality of plausible but fake information is only going to increase.

"However, the possibilities of jailbreaks and prompt injections pose a significant challenge to using language models to prevent phishing."

Gives a hint at the arms race between attack and defense.