Satan attacks the saints in two main ways. The Beast attacks with power and persecution, endeavoring to destroy the witness of the saints and force them to worship the Beast. Babylon attacks with seduction, endeavoring to destroy the purity of the saints.
permalink source: Vern Poythress, The Returning King, http://www.frame-poythress.org/Poythress_books/Returning_King/BRvCom17.htm