Offensive cybersecurity firm Theori said on Tuesday it was selected as a research performer for the U.S. Defense Advanced Research Projects Agency’s project on autonomous AI application security. The company said its AI-based autonomous hacking simulation platform, Xint, will be used to conduct detailed analysis of in-house and open-source messenger applications used across the U.S. Defense Department. Theori said Xint found three vulnerabilities in Signal’s Android version within an hour.

U.S. and Chinese security experts proposed joint principles to prevent artificial intelligence from independently deciding on attacks on nuclear command systems or the use of nuclear weapons. A Brookings Institution and Fudan University report urged expanding the human-control principle used for nuclear weapons to broader military AI. It called for humans alone to decide on cyberattacks targeting NC3 or critical infrastructure and warned that fast, unpredictable AI could escalate crises. The proposal also includes a military AI hotline and a shared definition of human control.