There's nothing quite as effective for illustrating a point than a top n list. Here are the top 4 reasons that the new iPhone is less secure than the previous version.

4. The Price

How could the price make the product less secure? Very simply, the more ubiquitous a platform, the more attractive a target it is. By lowering the price in order to increase market-share, Apple is creating a more attractive base of targets.

3. The SDK

Complexity breeds insecurity. The addition of third party code creates an avenue for exploit. Apple can work to minimize that, but there's a choice of functionality over security here. After all, not shipping the product at all would be very secure.

2. MS Office Compatibility

Do you remember MS08-026? How about MS07-044? Well, welcome to the world of remote code execution via MS Office Documents, little iPhone.

1. Enterprise-Ready

If the price of the iPhone increases its attractiveness as a target due to volume, then being enterprise-ready increases its attractiveness due to value. All the things about other enterprise computing devices that attackers love will now be present in the iPhone. Along with that comes a whole new world of exciting hackability. Who wouldn't want to break into it and see what juicy data the CEO is storing there?