Malignant Narcissists/psychopaths (human predators) ‘triangulate’ which means they engage a third person in a dynamic to undermine their victim. This is an insidious tactic and more complex than just simple gossip, for example. It may be done publicly or privately. It weakens the victim, either through causing the victim uncertainty and insecurity if it is done publicly or causing people to have negative attitudes towards the victim if it is done privately. Triangulation may involve, for example, telling lies to a third party about the victim, engaging professionals in false narrative about the victim which is written into medical records, or engaging a person’s children in lies about the victim (the children’s other parent) etc. The depth and complexity of the false narrative is almost impossible for the victim to pull back from. Publicly, the human predator might subtly flirt with another person in front of their partner, they may demean a person in a workplace, or they may imply someone in a religious congregation has done something inappropriate. Sometimes human predators use triangulation to pit two people against each other, telling both parties negative things about the other that are untrue. Sometimes people on social media may create false accounts and interact with them on social media to triangulate and spread negative false information. The human predator does this for control and for sadistic enjoyment. They may also do it to punish someone who has exposed them or thwarted them in achieving a goal.