If you have an iPhone, update it today. If you don’t have an iPhone, well, I already feel sorry for you…

iPhone OS 3.0.1 already released, addresses SMS flaw – Ars Technica

The vulnerability was first revealed in June by Miller and University of Milan student Vincenzo Iozzo, who said that they planned to reveal the flaw during Black Hat in July. That week has arrived, with Miller and Mulliner demonstrating a “non-malicious” exploit for the SMS bug. This issue did not only affect iPhones—it affected a number of Windows Mobile, Android, and other GSM phones as well. The iPhone was one of the higher-profile devices on the list, however, meaning that all eyes were on Apple to release an update—and fast.