Abstract: Security techniques are provided for cooperative file distribution. An encryption key or a nonce (or both) are generated for a package containing one or more files that are to be sent in a cooperative file distribution system. Random access encryption techniques can be employed to encrypt a package containing one or more files to be sent in a cooperative file distribution system. One or more storage proxies are allocated to a package to be transmitted in a cooperative file distribution system, based on load. Access to trackers in the cooperative file distribution system is controlled using security tokens. Content can automatically expire using a defined expiration period when the content is uploaded into the system. Variable announce intervals allow the tracker to control how often the tracker will receive a message, such as an announcement or a heartbeat message, from peers in the system.

Abstract: A publisher service is disclosed which centralizes outbound communications between an email system and a third party service. The service receives a recipient response to an enhanced email to be sent to a third party service and acquires the email associated with the recipient response. The service then obtains sending instructions based on the enhanced email and sends the response to the third party service using the sending instructions.

Abstract: An email system is disclosed which provides annotations associated with email to recipients and allows the recipients to interact with annotated email. The system receives email and determines whether the received email includes items that should be annotated. Responsive to determining that an email includes items that should be annotated, the system acquires annotated information related to the email. The received email and associated annotated information are stored in the email system. When a request is received to access email for a specific user, the email system displays an email listing, identifying email that is associated with an annotation using a visual representation. If the recipient responds to an annotation, the system receives and stores the recipient's response. The system then sends the recipient's response to the sender of the email. The system also receives updates to received email from email senders and displays email updates to the appropriate recipients.

Abstract: Security techniques are provided for cooperative file distribution. An encryption key or a nonce (or both) are generated for a package containing one or more files that are to be sent in a cooperative file distribution system. Random access encryption techniques can be employed to encrypt a package containing one or more files to be sent in a cooperative file distribution system. One or more storage proxies are allocated to a package to be transmitted in a cooperative file distribution system, based on load. Access to trackers in the cooperative file distribution system is controlled using security tokens. Content can automatically expire using a defined expiration period when the content is uploaded into the system. Variable announce intervals allow the tracker to control how often the tracker will receive a message, such as an announcement or a heartbeat message, from peers in the system.

Abstract: Security techniques are provided for cooperative file distribution. An encryption key or a nonce (or both) are generated for a package containing one or more files that are to be sent in a cooperative file distribution system. Random access encryption techniques can be employed to encrypt a package containing one or more files to be sent in a cooperative file distribution system. One or more storage proxies are allocated to a package to be transmitted in a cooperative file distribution system, based on load. Access to trackers in the cooperative file distribution system is controlled using security tokens. Content can automatically expire using a defined expiration period when the content is uploaded into the system. Variable announce intervals allow the tracker to control how often the tracker will receive a message, such as an announcement or a heartbeat message, from peers in the system.