An electronic file is decomposed into a number of fragments. The fragments are assembled into a number of fragment files. Instructions for restoring the electronic file are generated. The fragment files are sent to a recipient device at different times and/or in a random (or different) order. In some implementations, the fragment files are transferred over different routes to and from the Internet using, for example, two or more Internet Service Providers (ISPs). In some implementations, the restoring instructions can be retrieved by a user from a network (e.g., from a website) using a link sent with the email. In another implementation, the instructions are uploaded on a website or other web property, which the recipient can access through a password or other security procedures. In some implementations, the instructions can be included in a protected application attached to the email sent to the recipient.