Beware if you have any jokester friends with iOS devices -- they might just have a way to ruin your day if you have any iOS gadgets of your own. Apple has confirmed that it's fixing a recently discovered bug that crashes iPhones and other iOS 8 hardware the moment you get a carefully crafted set of Unicode characters in Messages and other communication apps with notification previews. It's not clear when that fix will be available, but the only existing safeguard is to turn off those previews. Otherwise, you may have to bend over backwards to make sure that those rogue messages don't cause further chaos. While this isn't the biggest iOS glitch we've seen lately, it's definitely the most annoying.