The aggressor deliberately infiltrates its agents and loyalists into the victim's already existing, legitimate representative bodies, parties, or congresses. This makes it possible to hijack the governance of the structure from within, sabotage its work, or force it to make decisions in the aggressor's interests.
Deliberate transfer of loyal delegates and political agitators to the All-Ukrainian Congress of Soviets in Kyiv in order to hijack the agenda from within[1].