iPhone passcode lock bypass vulnerability (again)

Summary:An iPhone user has found a trivial way to bypass the four-digit passcode lock on fully patched iPhone (iOS 4.1) devices.

An iPhone user has found a trivial way to bypass the four-digit passcode lock on fully patched iPhone (iOS 4.1) devices.

The vulnerability was posted to MacRumors forum by a New Zealand iPhone user who figured out a sequence of key taps that rendered the passcode useless.

When you iPhone is locked with a passcode tap Emergency Call, then enter a non-emergency number such as ###. Next tap the call button and immediately hit the lock button. It should open up the Phone app where you can see all your contacts, call any number, etc.

I tested this on my fully patched iPhone and can confirm that it works as advertised.

This isn't the first time the iPhone passcode was disabled by a few key strokes.

ALSO SEE:

Topics: Security, Hardware, iPhone, Mobility, Smartphones

About

Ryan Naraine is a journalist and social media enthusiast specializing in Internet and computer security issues. He is currently security evangelist at Kaspersky Lab, an anti-malware company with operations around the globe. He is taking a leadership role in developing the company's online community initiative around secure content managem... Full Bio

zdnet_core.socialButton.googleLabel Contact Disclosure

Kick off your day with ZDNet's daily email newsletter. It's the freshest tech news and opinion, served hot. Get it.

Related Stories

The best of ZDNet, delivered

You have been successfully signed up. To sign up for more newsletters or to manage your account, visit the Newsletter Subscription Center.
Subscription failed.