It is never pleasant to think that one of the people you are working with, possibly very closely, who you go drinking with, who is sleeping with one of your friends, who seems so full of life and passion is actually trying to undermine everything you are doing.
It does not matter if your group is very open rather than closed and covert. There is still much that a skilled operative can do to cause disruption to make you ineffective. For example, planting false information such as at…