4. Ivan Krstic:

Ivan Hired in 2009, in charge of core OS security on the Mac. He previously ran security for the One Laptop Per Child program, where he came up with a method to secure programs in Linux called BitFrost that wrapped individual programs in their own virtual operating environments so that one couldn’t harm the other. The approach was considered so novel that some suggested incorporating it as a core feature of Linux.

5. Window Snyder:

She is the Senior Product Manager, Security and Privacy at Apple Inc. She had previously headed up security operations at Mozilla, the open source software organization responsible for the Firefox Web browser. She has also held software security positions at Microsoft. She’s listed as co-author, with Frank Swiderski, of a Microsoft-produced book called “Threat Modeling,” which focuses on looking at computer security from the point of view of an attacker.

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