Of late, there has been a lot of interest in the topic of "collusion".
There is one kind of collusion, that people should be aware of and be very careful of - Satan and his fellow workers try to collude with your / mine flesh in order to lead us away from God.
Read more on "Spiritual Warfare", waged by Satan at:-
http://devos20xx.blogspot.com/2017/08/spiritual-warfare-under-construction.html (Who is Satan? What is he upto these days? What is God doing about it? In what ways Satan attacks a child of God?)