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Process isolation is a set of different hardware and software technologies  designed to protect each process from other processes on the operating system. Victims Of The Masses - The Isolation Process - The Isolation Process (File does so by preventing process A from writing to process B.
Process isolation can be implemented with virtual address spacewhere process A's address space is different from process B's address space — preventing A from writing onto B.
Security is easier to enforce by disallowing inter-process memory access, in contrast with less secure architectures such as DOS in which any process can write to any memory in any other process. In a system with process isolation, limited controlled interaction between processes may still Album) allowed over inter-process communication IPC channels such as shared memorylocal sockets or Internet sockets.
In this scheme, all of the process' memory is isolated from other processes except where the process is allowing input from collaborating processes. System policies may disallow IPC in some circumstances. For example, in mandatory access control systems, subjects with different sensitivity levels may not be allowed to communicate with each other.
The security implications in these circumstances are broad and span applications in network key encryption systematics as well as distributed caching algorithms. Interface-defined protocols such as basic cloud access architecture and network sharing are similarly affected. Internet Explorer 4 used process isolation in order to allow separate windowed instances of the browser their own processes; however, at the height of the browser warsthis was dropped in subsequent versions to compete with Netscape Navigator which sought to concentrate upon one process for the entire Internet suite.
This idea of process-per-instance would not be revisited until a decade afterwards, when tabbed browsing became more commonplace. This method known popularly as multiprocess or process-per-tab is meant to both manage memory and processing by allowing offending tabs to crash separately from the browser and other tabs and manage security.
From Wikipedia, the free encyclopedia. Redirected from Multi process browser. See also: List of web browsers. Microsoft Research. Categories : Operating system security. Namespaces Article Talk. Views Read Edit View history.
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