Dogpiling, dog-piling or simply a piling-on is a form of online harassment[1] or online abuse characterized by having groups of harassers target the same victim.
Examples of online abuse include flaming, doxing (online release of personal information without consent), impersonation, and public shaming.
[2][3] Dog-pilers often focus on harassing, exposing, or punishing a target for an opinion that the group does not agree with, or just simply for the sake of being a bully and targeting a victim.
[3] Participants use criticism and/or insults [3][4][5] to target a single person.
[7] Dogpiling often occurs in the form of online harassment.