A security researcher caused something of a kerfuffle during the Def Con 2023 hacking conference in Las Vegas last month. Some attendees with iPhones were shocked to see an Apple pop-up notification asking them to connect to a nearby Apple TV device using their Apple ID credentials. Not least, as some of the hackers on the receiving end of these Bluetooth-powered prompts were running with Bluetooth disabled. Or so they thought. Now, another security researcher has demonstrated a similar hack that uses a readily available hacking device to spam nearby iPhones with pop-up notifications and effectively execute a denial of service attack.