InfoWorld: Apple iOS: Why it's the most secure OS, period

Several factors have combined to make the iPhone's and iPad's operating system into what is arguably the most secure commercial OS -- desktop or mobile

By Robert Lemos
June 06, 2011

In June 2007, Apple released the iPhone, and the device quickly took off to become a major brand in the smartphone market. Yet when the iPhone shipped, security on the mobile operating system was nearly nonexistent. Missing from the initial iOS (then called iPhone OS) were many of the security features that modern-day desktop software has as a matter of course, such as data-execution protection (DEP) and address-space layout randomization (ASLR). Apple's cachet lured security researchers to test the platform, and in less than a month, a trio had released details on the first vulnerability: an exploitable flaw in the mobile Safari browser.

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