The company introduced the tool, called Parcata, on Wednesday. Leidos said it is running the platform against its own code before deploying it to mission environments. The company said it can patch zero-day vulnerabilities in real time. How Does Parcata Connect to DARPA’s AI Cyber Challenge? Leidos credited its Kudu Dynamics team with developing the platform and said the underlying technology was validated through the Defense Advanced Research Projects Agency’s AI Cyber Challenge, or AIxCC.