The need for Consciousness in an AI System

Last March Microsoft released an AI bot called Tay which they were forced to close down within days of release. The reason was the bot learned from its users and then started to say unsavoury things. The bot had a deep learning neural network and was modifying itself according to its users behaviour. The developers took the bot down and started to try to modify its neural network software to prevent this happening. However, I think the problem is, that they are missing a software component, rather than needing to modify the neural net. In fact the neural net is behaving correctly.