Concern trolling is an offensive psychological tactic. It involves an outward display of seemingly well-intentioned concern in order to have a disruptive effect on the target. While in most cases it is a common and relatively-harmless trolling tactic, it has been efficiently weaponized to dangerous and sometimes lethal ends by astroturf groups and suicide-trolling operations.
Suicide trolls are well known to use concern trolling as a life ruination technique, in order to weaken an opponent. They do this by pretending to be a concerned friend or former friend. By using this feigned position of closeness to the target, they can effectively spread vicious rumors about the target. As suicide-trolling campaigns are generally designed to drive the target insane, they explain away the target's instability as something they are worried about, in order to springboard these rumors.
This particular form of concern trolling has three main desired effects:
When combined with other suicide-trolling tactics, concern trolling can have a very lethal effect. It is not even limited to “fake friends,” as abusive family members and vengeful lovers will oftentimes leverage this tactic as well.
Concern trolling is a common tactic used by astroturf groups and agent provocateurs. In these cases, the operative(s) embed themselves into activist or political groups. Once inside, they voice disingenuous “concerns” in order to weaken morale or send the group on a wild goose chase.
This may also be stacked with mirroring, in which the agent provocateur(s) may accuse other people of concern trolling, in order to eliminate dissent and/or spread further confusion.