Bunnie gets into a lot more detail in his post. It's frankly terrifying, because it's hard to read this without concluding that, indeed, any battery in any gadget could actually be a powerful, undetectable bomb. What's more, supply chain security *sucks* and bunnie runs down several ways you could get these batteries into your target's gadget.
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These range from nefarious to brute simple: "buy a bunch of items from Amazon, swap out the batteries, restore the packaging and seals, and return the goods to the warehouse."
Bunnie's point is that, having shown the world that battery bombs are possible, the Israelis have opened the hellmouth. They were the first ones to do this, but they won't be the last. We need to figure out something before "the front line of every conflict [is brought] into your pocket, purse or home."
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