Abstract: A system and method for secure transmission of sensitive end user information from an Internet portal operated by a publisher to a third party data processor. The publisher provides a content portal such as an e-commerce or healthcare information site. A third party data processor such as a bank or healthcare organization requires the sensitive information for a data processing function. In response to the requirement for sensitive information, a trusted proxy frame is invoked from a secure server operative to securely communicate the sensitive information. The trusted proxy frame is displayed in a secure context in the end user's browser and receives input of the sensitive information. The sensitive information is encrypted and communicated through the secure server to the third party data processor.