So what happens now? As for Hezbollah, its leaders and operatives will no longer be able to trust equipment connected to a network — very likely one of the primary goals of the attacks. And the world will have to wait to see if there are any long-term effects of this attack and how the group will respond.
But now that the line has been crossed, other countries will almost certainly start to consider this sort of tactic as within bounds. It could be deployed against a military during a war or against civilians in the run-up to a war. And developed countries like the United States will be especially vulnerable, simply because of the sheer number of vulnerable devices we have.
Source: Israel’s Pager Attacks Have Changed the Worldby Bruce Schneier