Abstract: Systems and methods for dynamically defining features for machine learning models in classification systems are disclosed. Such systems and methods may be usefully applied to train and utilize machine learning models in a variety of contexts, including email classification systems.

Abstract: A system and method for providing secure message services. The system includes a forwarding service to receive message for delivery to a recipient. The system checks for preferences for delivery of the message content including encryption preferences and notifies the recipient or delivers the message according to the encryption preferences. The system includes an interoperability engine to determine delivery preferences including security preferences, the security preferences indicating a security protocol by which the message can be securely delivered to the recipient.

Abstract: The invention provides a method and apparatus for transmitting a message from a sender to an intended recipient. The method includes encrypting a message using a symmetric key, sending the encrypted message to an intended recipient without the symmetric key and providing the symmetric key to a third party. If the intended recipient signs and returns to the third party a receipt for the message, the method includes transferring, by the third party, the receipt to the sender and providing the symmetric key to the intended recipient.

Abstract: An auditing system and method for analyzing email, including capturing email transferred over a network and transferring the email to a data analyzer. The email can be encrypted for safe transfer to the analysis location. Once the email is delivered to the analysis location, it is decrypted and the analysis process begins. The analysis of the email includes scanning the email for specific search terms found in a lexicon and then identifying trends based on scanning results.

Abstract: Methods and apparatus for secure transmission of data in pipeline fashion. A pair of transaction certificates can be used to verify the authenticity and integrity of data transmitted in more than one block.

Abstract: An auditing system and method for analyzing email, including capturing email transferred over a network and transferring the email to a data analyzer. The email can be encrypted for safe transfer to the analysis location. Once the email is delivered to the analysis location, it is decrypted and the analysis process begins. The analysis of the email includes scanning the email for specific search terms found in a lexicon and then identifying trends based on scanning results.

Abstract: A method and apparatus for transferring a message securely from a sender to a recipient over a network and includes at each transfer: creating a message; retrieving the public key of the recipient from an external key server just prior to sending the message; signing the message using the private key of the sender; encrypting the signed message using a public key encryption algorithm and the public key of the recipient producing an encrypted signed message; generating an E-mail message addressed to the recipient; attaching the encrypted signed message as an attachment to the E-mail message; and, transmitting the E-mail message to the recipient.

Abstract: A system and method for providing secure message services. The system includes a forwarding service to receive message for delivery to a recipient. The system checks for preferences for delivery of the message content including encryption preferences and notifies the recipient or delivers the message according to the encryption preferences. The system includes an interoperability engine to determine delivery preferences including security preferences, the security preferences indicating a security protocol by which the message can be securely delivered to the recipient.

Abstract: The invention provides a method and apparatus for transmitting a message from a sender to an intended recipient. The method includes encrypting a message using a symmetric key, sending the encrypted message to an intended recipient without the symmetric key and providing the symmetric key to a third party. If the intended recipient signs and returns to the third party a receipt for the message, the method includes transferring, by the third party, the receipt to the sender and providing the symmetric key to the intended recipient.

Abstract: A system and method for authorizing certain aspects of network based transactions between a customer and a merchant is disclosed. At a credit card authorization system, merchant information, transaction information, and a credit card number of a customer is received from an e-commerce merchant. An authorization form at the credit card authorization system that contains the transaction information is created. An internet browser associated with the customer is caused to display the authorization form. A signature phrase is received from the customer via the authorization form. The received signature phrase is verified that it corresponds to a signature phrase stored in a credit card account associated with the credit card number. The internet browser associated with the customer is caused to be transferred to a web site associated with the e-commerce merchant.

Abstract: A system and method for authorizing certain aspects of network based transactions between a customer and a merchant is disclosed. At a credit card authorization system, merchant information, transaction information, and a credit card number of a customer is received from an e-commerce merchant. An authorization form at the credit card authorization system that contains the transaction information is created. An internet browser associated with the customer is caused to display the authorization form. A signature phrase is received from the customer via the authorization form. The received signature phrase is verified that it corresponds to a signature phrase stored in a credit card account associated with the credit card number. The internet browser associated with the customer is caused to be transferred to a web site associated with the e-commerce merchant.

Abstract: A method and apparatus for transferring a message securely from a sender to a recipient over a network and includes at each transfer: creating a message; retrieving the public key of the recipient from an external key server just prior to sending the message; signing the message using the private key of the sender; encrypting the signed message using a public key encryption algorithm and the public key of the recipient producing an encrypted signed message; generating an E-mail message addressed to the recipient; attaching the encrypted signed message as an attachment to the E-mail message; and, transmitting the E-mail message to the recipient.

Abstract: A method and apparatus for transferring a message securely from a sender to a recipient over a network and includes at each transfer: creating a message; retrieving the public key of the recipient from an external key server just prior to sending the message; signing the message using the private key of the sender; encrypting the signed message using a public key encryption algorithm and the public key of the recipient producing an encrypted signed message; generating an E-mail message addressed to the recipient; attaching the encrypted signed message as an attachment to the E-mail message; and, transmitting the E-mail message to the recipient.

Abstract: A system and method for providing secure E-mail services. The system includes a forwarding service to receive an E-mail message for delivery to a recipient. The system checks for recipient preferences for delivery of the E-mail message content including encryption preferences and notifies the recipient or delivers the message according to the encryption preferences. The system also includes an interoperability engine to determine delivery preferences of the sender including security preferences, the security preferences indicating a security protocol by which the E-mail message can be securely delivered to the recipient.

Abstract: A system and method for providing secure E-mail services. The system includes a forwarding service operable to receive an E-mail message for delivery to a recipient, store the message at least temporarily in a storage means and check for recipient preferences for delivery of the E-mail message content. If no preference is specified and if Web-based delivery is specified, the system provides an E-mail notification to the recipient including a secure link to the message and responds to a page request from the recipient indicating the message including extracting the message from the storage means, formatting the message as a page and delivering the page to the recipient's web browser. If a preference for delivery other than Web-based is specified, the system delivers the message in accordance with the recipient's preference.

Abstract: A method and apparatus for authorizing a transaction between a consumer and a merchant over a network where the anonymity of the consumer with respect to the merchant is maintained while still validating the authenticity of the consumer prior to completing the transaction. The method includes registering consumer payment information at a payment server and launching a charge slip application including securely transferring unique transaction information for display to the consumer. The consumer digitally signs the charge slip and encrypts the charge slip and consumer digital signature with a payment server key. The merchant digitally signs the encrypted charge slip data. The payment server authenticates the consumer, the merchant and the transaction details at the payment server and requests authorization of the transaction from a card processor. Upon approval, the payment server returns an approval and shipping information for the consumer to the merchant so that the transaction can be completed.