More people than ever are receiving text messages warning them that if they don't pay their toll bill by a certain date, they could face a fine and lose their driver's license. These scams are not just more common — they're also claiming more victims and big phone companies like Apple and Google can't block them.

Highway text scams are a big problem that's continuing to grow with the use of at least 60,000 domain names. There's little Apple can do about it, but you can protect yourself. Here's what's going on.