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Process isolation
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<p>Process isolation is a set of different hardware and software technologies designed to protect each <a href="/facts/Computer_process/Vcq7EnUV">process</a> from other processes on the <a href="/facts/Operating_system/8XTuvMh2">operating system</a>. It does so by preventing process A from writing to process B. </p><p>Process isolation can be implemented with <a href="/facts/Virtual_address_space/ILxbMjgv">virtual address space</a>, where process A's address space is different from process B's address space – preventing A from writing onto B. </p><p>Security is easier to enforce by disallowing inter-process memory access, in contrast with less secure architectures such as <a href="/facts/DOS/sWwDXNmX">DOS</a> in which any process can write to any memory in any other process. </p>