The FBI has warned that cybercriminals are using an AI-assisted security testing tool called ARTEX to accelerate attacks worldwide. Some intrusions reportedly reached privileged access in under three hours, prompting the bureau to urge organisations to strengthen cybersecurity measures. Washington: The FBI has warned that cybercriminals are using an artificial intelligence-assisted security testing tool to accelerate attacks on organisations around the world, with some intrusions reaching privileged access in less than three.