Botnets, adversarial attacks and data poisoning top leaders’ AI threat list Companies are putting more money into AI while naming attacks on AI systems as the threat they are least ready to face. PwC surveyed 3,934 business and technology leaders in 71 countries between May and July 2026. Half of the security and technology executives among them ranked such attacks in their top five preparedness gaps, ahead of every other threat on the list. More than half