My day job is working on sandboxing for Firefox. In the context of a browser, sandboxing refers to the processes that run web pages, generally called “content” or “renderer” processes. These are in contrast to the “parent” or “browser” process, which coordinates the content processes and is not sandboxed, so it can do things like write files anywhere on disk to save downloaded files or access the camera. A related computer security technique is exploit mitigation.
