We still don’t know how the Lebanon pager attack happened. Here’s what we do know about our own electronic devices

So far, the attacks that targeted Iran-backed Lebanese militant group Hezbollah members through their pagers have had devastating consequences. At least nine people, including an eight-year-old girl, were killed, and at least 2,800 were wounded. Over 150 of those injured are in critical condition, according to the Lebanese health minister.