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Secure World, also known as [http://www.arm.com/products/processors/technologies/trustzone/index.php TrustZone], Trusted Execution Environment, and (by Apple) Secure Enclave, is a sandboxed execution environment that has higher privileges that the normal [[Kernel]]. On the Vita, it seems that secure world has only a few tasks, which is facilitating communication with the [[F00D Processor]], as well as SceGrab and SceSonyRegbus HW devices. This provides an additional layer of buffer between the application processor and the security processor. In addition, after firmware 2.10, kernel process exceptions invoke a TrustZone call to initiate a kernel memory snapshot and encrypt it for use in a coredump.  
 
Secure World, also known as [http://www.arm.com/products/processors/technologies/trustzone/index.php TrustZone], Trusted Execution Environment, and (by Apple) Secure Enclave, is a sandboxed execution environment that has higher privileges that the normal [[Kernel]]. On the Vita, it seems that secure world has only a few tasks, which is facilitating communication with the [[F00D Processor]], as well as SceGrab and SceSonyRegbus HW devices. This provides an additional layer of buffer between the application processor and the security processor. In addition, after firmware 2.10, kernel process exceptions invoke a TrustZone call to initiate a kernel memory snapshot and encrypt it for use in a coredump.  
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== FW Difference ==
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{| class="wikitable"
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|-
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! FW version !! What changed
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|-
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| 3.36 || unknown
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|-
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| 3.50 || Initial stack base changed. (+ 0x100)
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|}
    
== Security ==
 
== Security ==

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