22 equivalent of the defendants recruiting others to harass the victims and the victims alone. The causation link is satisfied. The defendants cannot launder their harassment of the Lyons family through the Internet to escape liability. b. "Seriously alarms" prong. Section 43A (a) also requires the Commonwealth to prove that the acts of alleged harassment "seriously alarm[ed]" the victims. The serious alarm required under § 43A (a) is a "demanding, subjective element of harm" that must be satisfied by a victim's testimony rather than conjecture. (2007). Commonwealth v. Braica, 68 Mass. App. Ct. 244, 247 The defendants argue that (1) the Commonwealth offered insufficient proof that the victims were seriously alarmed, and (2) the victims did not experience serious alarm separately for each act, as required, rather than cumulatively as the result of the pattern of harassing acts. We disagree with both contentions. First, the Lyonses' subjective feelings of fear and anxiety were actual (not hypothetical), significant, and well documented at trial. As a general matter, Jim and Bernadette testified that they felt "bombarded," "attacked," and "very frightened" throughout the ordeal. Jim described the thirty-five-day "odyssey" in which the defendants would "torture [them]," stating that he was concerned about the safety of his family and himself: "The[y] attacked my business. They attacked my