The vulnerability, which can be exploited by an attacker-controlled WiFi point or Web page, hasn’t yet been reported in the wild. And Apple’s working on a fix for it. That said, we’re certain to see others in the months ahead now that the iPhone has been proved vulnerable.

“Anything as complex as a computer–which is what this phone is–is going to have vulnerabilities,” Johns Hopkins professor Avi Rubin told the New York Times. “The irony is that the more popular something is, the more insecure it becomes, because popularity paints a large target on its back.”

Added Steven M. Bellovin, a professor of computer science at Columbia University, “It’s not the end of the world; it’s not the end of the iPhone. It is a sign that you cannot let down your guard. It is a sign that we need to build software and systems better.”