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Very powerfull. She is programed with all of the hacking skills of the human race plus more she taught her self. Hope that answers your question and sorry for the bad spelling :)

It has been speculated that Cortana's efficiencey level has decreased due to the amount of Forerunner technology and data she has consumed. However, this may have elevated her to the stage of meta-stability.
250px-Cortana H4 Render


This answer was submitted by: ECSpartan    

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