seize on
verb
Definitions
To grasp or take hold of (an object) suddenly, forcibly, or tightly.
Example: The child seized upon the cat's tail as soon as it was within reach.
To take up, embrace, enact, or turn eagerly to (a plan, idea, ideology, cause, practice, method, etc.); to grasp, understand, and accept quickly; to adopt wholeheartedly or vigorously.
Example: I heard her ideas and seized upon them immediately.
To take possession of or claim (an idea, person, event, etc.) as one's own; to assimilate, absorb, annex, co-opt.
Example: After the controversy of her public statement, she has been the darling of right-wing groups who have seized upon her as the poster child of their cause.