Sandboxes are typically used when data (such as documents or executable code) arrives from an untrusted source. With sandboxing enabled, Acrobat and Reader assume all PDFs are potentially malicious and confines any processing they invoke to the sandbox. In the context of Adobe’s PDF products, an ‘untrusted program’ is any PDF and the processes it invokes. Sandboxing is a technique for confining the execution environment of untrusted programs and processes.
